100以内混合加减带括号

二年级下册100以内的加减混合运算
1.无括号的加减混合运算：
学生应遵循“从左到右”的运算法则进行计算，也就是遇到加法和减法时，按照题目中数字出现的顺序逐个计算。

例如：23+17-5=？
解答：先算23加17得到40，然后40减去5得到35.
2.带有括号的加减混合运算：
括号内的运算优先级最高，先计算括号内的内容，然后再做括号外的加减运算。

例如：56-（18+7）=？
解答：首先计算括号内的加法得25，再用56减去25得到31.
当然，以下是三个100以内的加减混合运算实例：
实例3（无括号）：
35+28-12=？
解答：先算加法，35加上28得到63，然后再用63减去12得到51.
实例4（带有括号）：
47-（13-5）+9=？
解答：首先计算括号内，13减去5得到8，然后用47减去这个结果得到39，最后加上9得到48.
实例5（包含多步混合运算）：
25+16-（7-3）+10=？
解答：先算括号内的减法，7减去3得4，那么原式变为
25+16-4+10，接着按照从左到右的顺序计算，先算25加16等于41，再用41减去4得到37，最后37加10等于47.。

For personal use only in study and research; not for commercial use练习题一2 . 53-(47-38)= 27 . 51-10+2= 52 . 52-(16-8)=3 . 30-(22-11)= 28 . 27-(3+22)= 53 . 3-(2+1)=4 . 13-(2+6)= 29 . 28-24+23= 54 . 32-(7+12)=5 . 52-(51-47)= 30 . 31-(7+2)= 55 . 18-(2+12)=6 . 5+1-2= 31 . 19+35-3= 56 . 43-(42-5)=7 . 44-(16+14)= 32 . 43-18+12= 57 . 23-(4+1)=8 . 85-72+4= 33 . 83-(23+51)= 58 . 66-29+33=9 . 11-(4-3)= 34 . 35+33-43= 59 . 79+14-15=10 . 53-38+11= 35 . 5+68-38= 60 . 3-(2+1)=11 . 44-(16-8)= 36 . 21+37-3= 61 . 67-43+32=12 . 4+87-48= 37 . 76-(64-11)= 62 . 77-(63-37)=13 . 76-(69-55)= 38 . 74+12-26= 63 . 94-(62+23)=14 . 41-67+55= 39 . 75-(46+24)= 64 . 65-(54-50)=15 . 27-(18+2)= 40 . 60-(24-6)= 65 . 66-(28+26)=16 . 4-(1+2)= 41 . 7-(1-1)= 66 . 32+8-24=17 . 7-2+35= 42 . 45-85+51= 67 . 25-(7-6)=18 . 6-(3-1)= 43 . 42-26+45= 68 . 91-(86-71)=19 . 20-(19+1)= 44 . 50+11-11= 69 . 46-(7-5)=20 . 50-(6-2)= 45 . 42-(26-14)= 70 . 82+17-17=21 . 29+68-77= 46 . 80-68+2= 71 . 38+59-48=22 . 76-(25-23)= 47 . 66+2-18= 72 . 59-(51-44)=23 . 41-37+37= 48 . 25+61-20= 73 . 55-(13+34)=24 . 84+1-56= 49 . 58-34+13= 74 . 29-(25+2)=练习题二1 . 33-(27+1)= 26 . 95-(64-2)= 51 . 67+2-19=2 . 68-30+17= 27 . 26-24+12= 52 . 86-(8+22)=3 . 32+45-23= 28 . 19-0+47= 53 . 24-(14+2)=4 . 65-(64+1)= 29 . 83+15-22= 54 . 16-8+0=5 . 19-(4-2)= 30 . 25-(11-5)= 55 . 71-(49+21)=6 . 54-(36-23)= 31 . 30-(19-4)= 56 . 0-(0-0)=7 . 19-(16-4)= 32 . 42-(20-10)= 57 . 40-62+50=8 . 26+27-23= 33 . 86-(49-2)= 58 . 24-(6+7)=9 . 10+75-69= 34 . 37-(14+4)= 59 . 37+44-76=10 . 44+41-54= 35 . 34-(30-24)= 60 . 81-12+5=11 . 50-37+9= 36 . 28-(25-11)= 61 . 30-(9+4)=12 . 49+18-42= 37 . 59-(57-8)= 62 . 67+30-82=13 . 81-(42+7)= 38 . 38+33-45= 63 . 70-(25+2)=14 . 29-19+60= 39 . 30-(17-3)= 64 . 81-(64-56)=15 . 7-74+69= 40 . 54+25-41= 65 . 23-(15+1)=16 . 52-83+42= 41 . 98-(37+12)= 66 . 88-80+4=17 . 11-72+68= 42 . 56-19+19= 67 . 15+1-7=18 . 12-(10-8)= 43 . 57-(21+24)= 68 . 23-(16-6)=19 . 23-21+0= 44 . 38+5-23= 69 . 60-22+32=20 . 46-(4-3)= 45 . 73-(3-2)= 70 . 85+8-26=21 . 59+28-78= 46 . 62-37+16= 71 . 72-(17+49)=22 . 79+15-33= 47 . 62-48+11= 72 . 80-(18-12)=23 . 8-(2+1)= 48 . 30-(1+4)= 73 . 20-(3+16)=25 . 4+71-16= 50 . 1-(1+0)= 75 . 22-(4+14)= 练习题三1 . 0+23-7= 26 . 15+78-57= 51 . 63+30-60=2 . 83-(39-11)= 27 . 43-21+24= 52 . 67+21-56=3 . 74-19+13= 28 . 28-(24-22)= 53 . 68+30-18=4 . 64-(57-54)= 29 . 87+9-86= 54 . 83-(26-19)=5 . 91-(88-49)= 30 . 32-(23+7)= 55 . 12-(6-2)=6 . 78-(61+6)= 31 . 18-10+24= 56 . 33-68+51=7 . 22-46+40= 32 . 64-13+17= 57 . 16-58+57=8 . 78-(4+9)= 33 . 69+10-18= 58 . 46-(25+2)=9 . 70-(47-46)= 34 . 61+34-3= 59 . 36-(16-10)=10 . 66-(42-35)= 35 . 63-50+13= 60 . 25+40-7=11 . 46-(2+18)= 36 . 83-13+2= 61 . 93-(58-44)=12 . 37+32-26= 37 . 70-35+16= 62 . 56+35-79=13 . 53-(8-7)= 38 . 89-(60+23)= 63 . 24+5-21=14 . 76+18-73= 39 . 84-(72+1)= 64 . 68-(26-1)=15 . 15-(5+1)= 40 . 2+71-52= 65 . 53+5-55=16 . 44+36-50= 41 . 60-(26-3)= 66 . 43-(17+18)=17 . 84+2-17= 42 . 38-(37+1)= 67 . 88-(40-11)=18 . 78-(33+33)= 43 . 31+56-41= 68 . 36-(35+1)=19 . 9+28-9= 44 . 79+16-48= 69 . 50-(25+6)=20 . 30-17+9= 45 . 53-(24-13)= 70 . 54-75+37=21 . 38-(36-8)= 46 . 13-20+15= 71 . 2+44-25=22 . 76+6-80= 47 . 83-(13-11)= 72 . 96-(64-22)=23 . 19-(6+5)= 48 . 73-13+21= 73 . 49-(19+23)=24 . 69-(39-25)= 49 . 34-(5-1)= 74 . 14-(7-1)=25 . 1-(1+0)= 50 . 55-(31+10)= 75 . 44+37-79= 练习题四1 . 14-(8-2)= 26 . 58-(9+14)= 51 . 9-(6-3)=2 . 77+13-19= 27 . 64-(22-3)= 52 . 62+29-66=3 . 89-(62+21)= 28 . 69-5+27= 53 . 43-(4+8)=4 . 22+31-40= 29 . 99-(39+59)= 54 . 19+51-63=5 . 86-(24+45)= 30 . 6-(2+3)= 55 . 7+12-15=6 . 91-(35-17)= 31 . 0+15-2= 56 . 31+19-18=7 . 20-(6+11)= 32 . 43-40+0= 57 . 10+44-48=8 . 19-(9-6)= 33 . 35-(18-17)= 58 . 44-24+23=9 . 83-(65-37)= 34 . 17+76-21= 59 . 18-(12+3)=10 . 9+0-6= 35 . 81-(23+52)= 60 . 70-(48+1)=11 . 43-(15-8)= 36 . 65-(39+25)= 61 . 33-68+55=12 . 84-48+14= 37 . 45+25-60= 62 . 28+20-32=13 . 56-(5-3)= 38 . 88-(18-6)= 63 . 39-(38-9)=14 . 33+40-0= 39 . 85+11-2= 64 . 39-(7-3)=15 . 86-(65-37)= 40 . 68-(6-1)= 65 . 62+20-46=16 . 1-(1-1)= 41 . 20-1+75= 66 . 58-(19+5)=17 . 47-(7+25)= 42 . 49-50+26= 67 . 49-76+37=18 . 21-(4-1)= 43 . 61-2+18= 68 . 64-(46-11)=19 . 9-(3-1)= 44 . 99-(10+31)= 69 . 38+43-22=20 . 93-(83+1)= 45 . 18-(13+4)= 70 . 43+55-27=21 . 71-30+4= 46 . 12-(10+1)= 71 . 36-(35+1)=22 . 2+27-3= 47 . 2+44-23= 72 . 20+56-53=23 . 60+35-14= 48 . 42-75+49= 73 . 67-(45+17)=25 . 28-(13+6)= 50 . 51+13-57= 75 . 45-83+45= 练习题五1 . 14-(8-2)= 26 . 58-(9+14)= 51 . 9-(6-3)=2 . 77+13-19= 27 . 64-(22-3)= 52 . 62+29-66=3 . 89-(62+21)= 28 . 69-5+27= 53 . 43-(4+8)=4 . 22+31-40= 29 . 99-(39+59)= 54 . 19+51-63=5 . 86-(24+45)= 30 . 6-(2+3)= 55 . 7+12-15=6 . 91-(35-17)= 31 . 0+15-2= 56 . 31+19-18=7 . 20-(6+11)= 32 . 43-40+0= 57 . 10+44-48=8 . 19-(9-6)= 33 . 35-(18-17)= 58 . 44-24+23=9 . 83-(65-37)= 34 . 17+76-21= 59 . 18-(12+3)=10 . 9+0-6= 35 . 81-(23+52)= 60 . 70-(48+1)=11 . 43-(15-8)= 36 . 65-(39+25)= 61 . 33-68+55=12 . 84-48+14= 37 . 45+25-60= 62 . 28+20-32=13 . 56-(5-3)= 38 . 88-(18-6)= 63 . 39-(38-9)=14 . 33+40-0= 39 . 85+11-2= 64 . 39-(7-3)=15 . 86-(65-37)= 40 . 68-(6-1)= 65 . 62+20-46=16 . 1-(1-1)= 41 . 20-1+75= 66 . 58-(19+5)=17 . 47-(7+25)= 42 . 49-50+26= 67 . 49-76+37=18 . 21-(4-1)= 43 . 61-2+18= 68 . 64-(46-11)=19 . 9-(3-1)= 44 . 99-(10+31)= 69 . 38+43-22=20 . 93-(83+1)= 45 . 18-(13+4)= 70 . 43+55-27=21 . 71-30+4= 46 . 12-(10+1)= 71 . 36-(35+1)=22 . 2+27-3= 47 . 2+44-23= 72 . 20+56-53=23 . 60+35-14= 48 . 42-75+49= 73 . 67-(45+17)=25 . 28-(13+6)= 50 . 51+13-57= 75 . 45-83+45= 练习题六1 . 10-8+1= 26 . 60+38-61= 51 . 92-(28+50)=2 . 92-(44+26)= 27 . 56-49+35= 52 . 75-(65+3)=3 . 58-(39-14)= 28 . 56-(11-4)= 53 . 26-(24+1)=4 . 51-(40+7)= 29 . 74+24-9= 54 . 87-77+6=5 . 51-(18+5)= 30 . 83+0-4= 55 . 21-(12-1)=6 . 54-18+45= 31 . 73-(60-51)= 56 . 77+19-8=7 . 11+51-51= 32 . 23-(8+7)= 57 . 82-51+15=8 . 94-(50-28)= 33 . 16-9+34= 58 . 12+67-31=9 . 84-(49-20)= 34 . 14-(2-1)= 59 . 84+15-9=10 . 87-8+2= 35 . 83-(10+11)= 60 . 23-1+69=11 . 40-(38+1)= 36 . 58+5-43= 61 . 34-7+36=12 . 57+30-35= 37 . 78-38+17= 62 . 17+73-50=13 . 86+11-73= 38 . 68+21-58= 63 . 87-(51-34)=14 . 90-(21+23)= 39 . 0+92-74= 64 . 58-(15-6)=15 . 49-(16-13)= 40 . 93-(28+45)= 65 . 73-13+26=16 . 94-(62-14)= 41 . 21+23-36= 66 . 15-12+6=17 . 0-(0+0)= 42 . 38-(7+9)= 67 . 64-1+1=18 . 26+51-73= 43 . 82+5-77= 68 . 9+88-85=19 . 92-(15+26)= 44 . 23+66-60= 69 . 26-(21+4)=20 . 62-30+14= 45 . 47-5+3= 70 . 56+37-30=21 . 71-8+3= 46 . 36-19+9= 71 . 42+48-39=22 . 52-(24+16)= 47 . 21+46-17= 72 . 13-(10+1)=23 . 15-(4-2)= 48 . 50-(27+11)= 73 . 1-(1-1)=25 . 33-(5+4)= 50 . 9-(2-1)= 75 . 67-(35+12)= 练习题七1 . 75+14-38= 26 . 27-11+45= 51 . 46-35+16=2 . 12-(1+10)= 27 . 20+9-10= 52 . 10+46-41=3 . 21-(12+5)= 28 . 23-(6+7)= 53 . 38-(4-2)=4 . 83-58+10= 29 . 64-(54-10)= 54 . 82-(35-17)=5 . 89+2-1= 30 . 44-(19+13)= 55 . 19-(4-2)=6 . 66-47+13= 31 . 52-(13-10)= 56 . 46-(15+9)=7 . 44-56+51= 32 . 30-(23-12)= 57 . 37+18-7=8 . 46+41-44= 33 . 50-37+2= 58 . 5-(2-1)=9 . 61-33+33= 34 . 30+58-53= 59 . 85-(19-17)=10 . 2-(1+1)= 35 . 7+0-5= 60 . 32+0-8=11 . 76-26+0= 36 . 37+39-74= 61 . 20-18+64=12 . 47+32-62= 37 . 10-(7+1)= 62 . 82+0-35=13 . 72-(60-18)= 38 . 68-(22-18)= 63 . 44-20+24=14 . 89-(49+33)= 39 . 15+18-10= 64 . 82-61+16=15 . 32-0+26= 40 . 12-(11+1)= 65 . 7-(2+3)=16 . 52+20-62= 41 . 84-76+5= 66 . 40-(10-8)=17 . 63+12-8= 42 . 41-29+27= 67 . 68-(25+8)=18 . 30-(9-5)= 43 . 73+4-30= 68 . 26+29-18=19 . 7-(2-1)= 44 . 5-0+88= 69 . 99-(12+1)=20 . 82+9-1= 45 . 64+18-63= 70 . 37+45-8=21 . 31-(17-14)= 46 . 6-(4+1)= 71 . 48+13-35=22 . 58-(16+14)= 47 . 81-(77+3)= 72 . 92-(15-2)=23 . 62-(53+7)= 48 . 1+0-0= 73 . 37-(5-3)=25 . 14-30+21= 50 . 26-6+18= 75 . 57-(26-25)= 练习题八1 . 59-15+28= 26 . 46-27+16= 51 . 53-21+19=2 . 51+32-22= 27 . 36-15+14= 52 . 79-45+2=3 . 30+67-62= 28 . 16-(1-1)= 53 . 76-(35-1)=4 . 38-(24-7)= 29 . 80+5-2= 54 . 45+52-94=5 . 86-(27-21)= 30 . 35-16+11= 55 . 15+30-0=6 . 13-(12+1)= 31 . 82-65+8= 56 . 60-(28-18)=7 . 29-87+67= 32 . 26-(6-5)= 57 . 97-(25+6)=8 . 4-(3-1)= 33 . 63-59+29= 58 . 77-(7-2)=9 . 41+27-21= 34 . 63-(2+55)= 59 . 59-21+34=10 . 9+87-16= 35 . 22-(7+9)= 60 . 59-(49+2)=11 . 75-(8-4)= 36 . 47-(26+12)= 61 . 22+41-38=12 . 16-56+50= 37 . 15+55-16= 62 . 48-31+41=13 . 36+50-25= 38 . 65-56+10= 63 . 3-(1+1)=14 . 56-(38-31)= 39 . 79-(63-35)= 64 . 24-(15+2)=15 . 1+98-39= 40 . 88-16+5= 65 . 22-(12+9)=16 . 29-33+14= 41 . 39-(11-4)= 66 . 71+15-24=17 . 48-(45-14)= 42 . 47-28+25= 67 . 58-66+17=18 . 71-59+5= 43 . 44-(2+16)= 68 . 49+6-17=19 . 79-(12+19)= 44 . 56-(20+32)= 69 . 53-(7-4)=20 . 95-(62-60)= 45 . 81+15-84= 70 . 54+38-52=21 . 61+26-76= 46 . 17-(2-1)= 71 . 60-(27-17)=22 . 39-1+4= 47 . 59-(32+26)= 72 . 59-(14-1)=23 . 63-21+18= 48 . 79-(61+7)= 73 . 49-(9-7)=25 . 43-(16-12)= 50 . 77+8-46= 75 . 60-(13+44)= 练习题九1 . 99-(35+40)= 26 . 26-9+26= 51 . 68-(26+28)=2 . 28+59-25= 27 . 73-(71-41)= 52 . 9+59-7=3 . 52-(28-24)= 28 . 17-(14+1)= 53 . 90-(1+77)=4 . 65-(40-26)= 29 . 42-(2+11)= 54 . 19-(18+1)=5 . 4+5-5= 30 . 76-(53-10)= 55 . 16-(1-1)=6 . 97-(26-2)= 31 . 40-(29-23)= 56 . 81+11-89=7 . 22-(3+16)= 32 . 59-0+13= 57 . 40-(28+7)=8 . 54-24+0= 33 . 19-(2-1)= 58 . 66-(33+21)=9 . 19-(9+9)= 34 . 60-(53-31)= 59 . 92-(70+4)=10 . 0-(0-0)= 35 . 51-(45-33)= 60 . 43-17+15=11 . 39+13-21= 36 . 34-29+0= 61 . 47-(33-24)=12 . 86-8+5= 37 . 30-(8+19)= 62 . 70+17-17=13 . 41-(17-9)= 38 . 15-(2+12)= 63 . 54+38-14=14 . 65+6-43= 39 . 22-20+12= 64 . 13+40-39=15 . 2-(1-1)= 40 . 52-75+44= 65 . 63-(10+19)=16 . 54-(41-16)= 41 . 43+44-48= 66 . 38-(22-3)=17 . 41-(32-26)= 42 . 97-(55-15)= 67 . 16-40+26=18 . 35-57+50= 43 . 51-(28+13)= 68 . 25-18+10=19 . 17-9+8= 44 . 57-(27+27)= 69 . 16-(7-6)=20 . 83-(31-30)= 45 . 12-(11+1)= 70 . 10+71-29=21 . 67-(27+5)= 46 . 80+16-54= 71 . 35-(17-8)=22 . 74-(14+20)= 47 . 59+13-38= 72 . 60-(53-28)=23 . 80-54+6= 48 . 89+8-65= 73 . 76+2-15=25 . 31-16+3= 50 . 48-37+1= 75 . 71-(29-13)= 练习题十1 . 90-(57+18)= 26 . 17+44-58= 51 . 71+4-25=2 . 41+34-2= 27 . 5-(2-1)= 52 . 86-(73-64)=3 . 26-(4+7)= 28 . 16-(4+6)= 53 . 63-(13+31)=4 . 35-(3+12)= 29 . 55+21-69= 54 . 63-(6+2)=5 . 17-(16+1)= 30 . 4-(2-1)= 55 . 46-(16+3)=6 . 8-65+62= 31 . 23+11-25= 56 . 28-7+70=7 . 56+36-46= 32 . 38-(12+15)= 57 . 55-(1+11)=8 . 17-(11+1)= 33 . 9+5-3= 58 . 70-41+16=9 . 11-(6+4)= 34 . 1-(1-1)= 59 . 54-(10+5)=10 . 51-(35+9)= 35 . 0-(0-0)= 60 . 88-(22+29)=11 . 75-(47-35)= 36 . 38+59-29= 61 . 30-8+23=12 . 92-(37+12)= 37 . 58-66+13= 62 . 94-(31+50)=13 . 27-(24+2)= 38 . 3-3+31= 63 . 32-2+4=14 . 21-(19+1)= 39 . 37-(10-5)= 64 . 73-20+17=15 . 10-(9-4)= 40 . 4+75-74= 65 . 30-1+3=16 . 43-(33+5)= 41 . 28-26+71= 66 . 82-(71+5)=17 . 56+33-56= 42 . 89+1-3= 67 . 84+14-87=18 . 88-(79+6)= 43 . 90-(37-16)= 68 . 21-74+62=19 . 44-73+48= 44 . 34-14+64= 69 . 96-(32+27)=20 . 29+40-40= 45 . 10-(8-6)= 70 . 21+57-6=21 . 36-32+20= 46 . 38-(5-2)= 71 . 23+57-23=22 . 65+17-78= 47 . 10-(2-1)= 72 . 44-(17+25)=23 . 42-53+31= 48 . 79+14-55= 73 . 94-(68+24)=24 . 55-(20-14)= 49 . 55-(32-11)= 74 . 22+24-14=25 . 19+43-11= 50 . 4-(2-1)= 75 . 61+38-91= 练习题一答案2 . 44 27 . 43 52 . 443 . 19 28 . 2 53 . 04 .5 29 . 27 54 . 135 . 48 30 . 22 55 . 46 . 4 31 . 51 56 . 67 . 14 32 . 37 57 . 188 . 17 33 . 9 58 . 709 . 10 34 . 25 59 . 7810 . 26 35 . 35 60 . 011 . 36 36 . 55 61 . 5612 . 43 37 . 23 62 . 5113 . 62 38 . 60 63 . 914 . 29 39 . 5 64 . 6115 . 7 40 . 42 65 . 1216 . 1 41 . 7 66 . 1617 . 40 42 . 11 67 . 2418 . 4 43 . 61 68 . 7619 . 0 44 . 50 69 . 4420 . 46 45 . 30 70 . 8221 . 20 46 . 14 71 . 4922 . 74 47 . 50 72 . 5223 . 41 48 . 66 73 . 824 . 29 49 . 37 74 . 2练习题二答案1 . 5 26 . 33 51 . 502 . 55 27 . 14 52 . 563 . 54 28 . 66 53 . 84 . 0 29 . 76 54 . 85 . 17 30 . 19 55 . 16 . 41 31 . 15 56 . 07 . 7 32 . 32 57 . 288 . 30 33 . 39 58 . 119 . 16 34 . 19 59 . 510 . 31 35 . 28 60 . 7411 . 22 36 . 14 61 . 1712 . 25 37 . 10 62 . 1513 . 32 38 . 26 63 . 4314 . 70 39 . 16 64 . 7315 . 2 40 . 38 65 . 716 . 11 41 . 49 66 . 1217 . 7 42 . 56 67 . 918 . 10 43 . 12 68 . 1319 . 2 44 . 20 69 . 7020 . 45 45 . 72 70 . 6721 . 9 46 . 41 71 . 622 . 61 47 . 25 72 . 7423 . 5 48 . 25 73 . 125 . 59 50 . 0 75 . 4 练习题三答案1 . 16 26 . 36 51 . 332 . 55 27 . 46 52 . 323 . 68 28 . 26 53 . 804 . 61 29 . 10 54 . 765 . 52 30 . 2 55 . 86 . 11 31 . 32 56 . 167 . 16 32 . 68 57 . 158 . 65 33 . 61 58 . 199 . 69 34 . 92 59 . 3010 . 59 35 . 26 60 . 5811 . 26 36 . 72 61 . 7912 . 43 37 . 51 62 . 1213 . 52 38 . 6 63 . 814 . 21 39 . 11 64 . 4315 . 9 40 . 21 65 . 316 . 30 41 . 37 66 . 817 . 69 42 . 0 67 . 5918 . 12 43 . 46 68 . 019 . 28 44 . 47 69 . 1920 . 22 45 . 42 70 . 1621 . 10 46 . 8 71 . 2122 . 2 47 . 81 72 . 5423 . 8 48 . 81 73 . 725 . 0 50 . 14 75 . 2 练习题四答案1 . 8 26 . 35 51 . 62 . 71 27 . 45 52 . 253 . 6 28 . 91 53 . 314 . 13 29 . 1 54 . 75 . 17 30 . 1 55 . 46 . 73 31 . 13 56 . 327 . 3 32 . 3 57 . 68 . 16 33 . 34 58 . 439 . 55 34 . 72 59 . 310 . 3 35 . 6 60 . 2111 . 36 36 . 1 61 . 2012 . 50 37 . 10 62 . 1613 . 54 38 . 76 63 . 1014 . 73 39 . 94 64 . 3515 . 58 40 . 63 65 . 3616 . 1 41 . 94 66 . 3417 . 15 42 . 25 67 . 1018 . 18 43 . 77 68 . 2919 . 7 44 . 58 69 . 5920 . 9 45 . 1 70 . 7121 . 45 46 . 1 71 . 022 . 26 47 . 23 72 . 2323 . 81 48 . 16 73 . 525 . 9 50 . 7 75 . 7 练习题五答案1 . 8 26 . 35 51 . 62 . 71 27 . 45 52 . 253 . 6 28 . 91 53 . 314 . 13 29 . 1 54 . 75 . 17 30 . 1 55 . 46 . 73 31 . 13 56 . 327 . 3 32 . 3 57 . 68 . 16 33 . 34 58 . 439 . 55 34 . 72 59 . 310 . 3 35 . 6 60 . 2111 . 36 36 . 1 61 . 2012 . 50 37 . 10 62 . 1613 . 54 38 . 76 63 . 1014 . 73 39 . 94 64 . 3515 . 58 40 . 63 65 . 3616 . 1 41 . 94 66 . 3417 . 15 42 . 25 67 . 1018 . 18 43 . 77 68 . 2919 . 7 44 . 58 69 . 5920 . 9 45 . 1 70 . 7121 . 45 46 . 1 71 . 022 . 26 47 . 23 72 . 2323 . 81 48 . 16 73 . 525 . 9 50 . 7 75 . 7 练习题六答案1 . 3 26 . 37 51 . 142 . 22 27 . 42 52 . 73 . 33 28 . 49 53 . 14 . 4 29 . 89 54 . 165 . 28 30 . 79 55 . 106 . 81 31 . 64 56 . 887 . 11 32 . 8 57 . 468 . 72 33 . 41 58 . 489 . 55 34 . 13 59 . 9010 . 81 35 . 62 60 . 9111 . 1 36 . 20 61 . 6312 . 52 37 . 57 62 . 4013 . 24 38 . 31 63 . 7014 . 46 39 . 18 64 . 4915 . 46 40 . 20 65 . 8616 . 46 41 . 8 66 . 917 . 0 42 . 22 67 . 6418 . 4 43 . 10 68 . 1219 . 51 44 . 29 69 . 120 . 46 45 . 45 70 . 6321 . 66 46 . 26 71 . 5122 . 12 47 . 50 72 . 223 . 13 48 . 12 73 . 125 . 24 50 . 8 75 . 20 练习题七1 . 51 26 . 61 51 . 272 . 1 27 . 19 52 . 153 .4 28 . 10 53 . 364 . 35 29 . 20 54 . 645 . 90 30 . 12 55 . 176 . 32 31 . 49 56 . 227 . 39 32 . 19 57 . 488 . 43 33 . 15 58 . 49 . 61 34 . 35 59 . 8310 . 0 35 . 2 60 . 2411 . 50 36 . 2 61 . 6612 . 17 37 . 2 62 . 4713 . 30 38 . 64 63 . 4814 . 7 39 . 23 64 . 3715 . 58 40 . 0 65 . 216 . 10 41 . 13 66 . 3817 . 67 42 . 39 67 . 3518 . 26 43 . 47 68 . 3719 . 6 44 . 93 69 . 8620 . 90 45 . 19 70 . 7421 . 28 46 . 1 71 . 2622 . 28 47 . 1 72 . 7923 . 2 48 . 1 73 . 3525 . 5 50 . 38 75 . 56 练习题八答案1 . 72 26 . 35 51 . 512 . 61 27 . 35 52 . 363 . 35 28 . 16 53 . 424 . 21 29 . 83 54 . 35 . 80 30 . 30 55 . 456 . 0 31 . 25 56 . 507 . 9 32 . 25 57 . 668 . 2 33 . 33 58 . 729 . 47 34 . 6 59 . 7210 . 80 35 . 6 60 . 811 . 71 36 . 9 61 . 2512 . 10 37 . 54 62 . 5813 . 61 38 . 19 63 . 114 . 49 39 . 51 64 . 715 . 60 40 . 77 65 . 116 . 10 41 . 32 66 . 6217 . 17 42 . 44 67 . 918 . 17 43 . 26 68 . 3819 . 48 44 . 4 69 . 5020 . 93 45 . 12 70 . 4021 . 11 46 . 16 71 . 5022 . 42 47 . 1 72 . 4623 . 60 48 . 11 73 . 4725 . 39 50 . 39 75 . 3 练习题九1 . 24 26 . 43 51 . 142 . 62 27 . 43 52 . 613 . 48 28 . 2 53 . 124 . 51 29 . 29 54 . 05 . 4 30 . 33 55 . 166 . 73 31 . 34 56 . 37 . 3 32 . 72 57 . 58 . 30 33 . 18 58 . 129 . 1 34 . 38 59 . 1810 . 0 35 . 39 60 . 4111 . 31 36 . 5 61 . 3812 . 83 37 . 3 62 . 7013 . 33 38 . 1 63 . 7814 . 28 39 . 14 64 . 1415 . 2 40 . 21 65 . 3416 . 29 41 . 39 66 . 1917 . 35 42 . 57 67 . 218 . 28 43 . 10 68 . 1719 . 16 44 . 3 69 . 1520 . 82 45 . 0 70 . 5221 . 35 46 . 42 71 . 2622 . 40 47 . 34 72 . 3523 . 32 48 . 32 73 . 6325 . 18 50 . 12 75 . 55 练习题十答案1 . 15 26 . 3 51 . 502 . 73 27 .4 52 . 773 . 15 28 . 6 53 . 194 . 20 29 . 7 54 . 555 . 0 30 . 3 55 . 276 . 5 31 . 9 56 . 917 . 46 32 . 11 57 . 438 . 5 33 . 11 58 . 459 . 1 34 . 1 59 . 3910 . 7 35 . 0 60 . 3711 . 63 36 . 68 61 . 4512 . 43 37 . 5 62 . 1313 . 1 38 . 31 63 . 3414 . 1 39 . 32 64 . 7015 . 5 40 . 5 65 . 3216 . 5 41 . 73 66 . 617 . 33 42 . 87 67 . 1118 . 3 43 . 69 68 . 919 . 19 44 . 84 69 . 3720 . 29 45 . 8 70 . 7221 . 24 46 . 35 71 . 5722 . 4 47 . 9 72 . 223 . 20 48 . 38 73 . 224 . 49 49 . 34 74 . 3225 . 51 50 . 3 75 . 8仅供个人用于学习、研究；不得用于商业用途。

100以内混合加减带括号53-(47-40)=4651-(10-2)=4352-(16-8)=4432+(45-5)=7283+(15-5)=9325-(7-6)=2465-(64-60)=6177-(5+35)=3750+(11-10)=5150-(6-2)=4642-(26-6)=2225-(11-5)=1971-(49+1)=2182+(17-7)=9219-(4-2)=1754-(36-30)=4842-(20-10)=3224-(6+4)=1413-(2+6)=531-(7+2)=22 43-(42-40)=41 85-(72-70)=83 35+(33-30)=38 3-(2+1)=04+(87-80)=11 74+(12-6)=80 65-(54-50)=61 4-(1+2)=180-(68+2)=10 59-(51-50)=58 84+(1+5)=90 97-(4-1)=94 67+(2+18)=87 32+(45-5)=72 30-(19-9)=20 40-(62-60)=38 30-(22-20)=8 28-(24-20)=418-(2+1)=15 44-(16-10)=38 83-(23+7)=53 79+(14-10)=83 44-(16-8)=20 76-(64-4)=16 94-(62+8)=24 27-(18-9)=18 7-(1-1)=738+(59-9)=88 41-(37-30)=14 58-(34+6)=18 53-(32-30)=51 68-(30+10)=28 19-(3+7)=925-(15-9)=1 26+(27-7)=46 27-(3+2)=22 32-(7+13)=12 5+(11-2)=1443-(18+2)=23 66-(29+1)=36 53-(38-30)=45 21+(37+3)=61 77-(63-60)=74 41-(57-50)=34 60-(24+6)=30 32+(8+2)=42 76-(25-20)=71 25+(61-60)=26 29-(25-5)=9 33-(27+3)=3 46-(24+6)=16 24-(14+6)=4 19-(16-8)=11 86-(49-9)=46 3-(2+1)=052-(51-50)=51 19+(35-30)=24 23-(4+1)=1811-(4-3)=85+(68-8)=65 67-(43+7)=17 76-(69-60)=7 75-(46+4)=25 66-(28+2)= 36 29+(68-60)= 37 66+(2+18)= 86 55-(13+7)= 35 58-(32+8)= 18 95-(64-60)= 91 86-(8+22)= 56 65-(64-60)= 61 83+(15-5)= 93 16-(8+2)= 619-(4-2)= 17 30-(19-9)= 20 25-(11-5)= 19 25-(15-9)= 19 71-(49+1)= 2154-(36-30)= 48 19-(16-8)= 11 86-(49-9)= 46 42-(20-10)= 32 40-(62-60)= 38 26+(27-7)= 46 37-(14+6)= 17 81-(12+8)= 61 24-(6+4)= 14 10+(75-70)= 15 34-(30-20)= 24 37+(44+6)= 87 44+(41-40)= 45 50-(37+3)= 10 28-(25-5)= 8 30-(9+1)= 20 49+(18+2)= 69 59-(57-7)= 9 70-(25+5)= 40 98-(37+3)= 5815+(1+7)= 23 23-(21-20)= 22 73-(3-2)= 72 72-(17+3)= 52 8-(2+1)= 55+(77-7)= 75 22-(4+1)= 17 83-(39-30)= 74 28-(24-20)= 24 83-(26-6)= 63 78-(61+9)= 8 64-(13+7)= 44 46-(25+5)= 16 66-(42-2)= 26 83-(13-6)= 76 67+(30-20)= 77 29-(19+1)= 9 54+(25-5)= 74 88-(8+12)= 68 12-(10-8)= 1038+(5+15)= 58 85+(8-6)= 87 79+(15-5)= 89 30-(1+4)= 25 2+(35-5)= 32 9+(23-20)= 12 43-(21+9)= 13 68+(30-10)= 88 91-(88-80)= 83 18-(10-4)= 12 16-(58-50)= 8 70-(47-7)= 30 63-(50+10)= 3 93-(58-50)= 85 81-(42+8)= 31 30-(17+3)= 10 23-(15+5)= 3 11-(72-70)= 9 57-(21+9)= 27 60-(22+8)= 3059+(28-8)= 79 62-(48+2)= 12 20-(3+6)= 114+(71-1)= 74 15+(78-58)= 35 67+(21-1)= 87 64-(57-50)= 57 32-(23+7)= 2 33-(68-60)= 25 78-(4+6)= 68 61+(34-30)= 65 25+(40-30)= 35 37+(32-30)= 39 38+(33-30)= 41 81-(64-4)= 21 52-(83-80)= -11 56-(19+1)= 36 23-(16-6)= 13 46-(4-3)= 45 62-(37+3)= 2280-(18-9)= 53 18-(12-2)= 81-(1+0)= 063+(30-23)= 70 74-(19+1)= 54 67+(9+11)= 87 12-(6-2)= 822-(46-40)= 16 69+(10-1)= 78 36-(16-10)= 30 46-(2+18)= 26 70-(35+5)= 30 89-(60+20)= 9 24+(5-1)= 28 56+(35-5)= 86 53-(8-7)= 52 76+(18-9)= 85 2+(71-1)= 72 43-(17+3)= 23 78-(33+7)= 3879+(16-9)= 86 84-(72+8)= 4 53+(5+25)= 83 68-(26-6)= 48 15-(5+1)= 9 60-(26-20)= 54 44+(36-6)= 74 38-(27+3)= 8 44+(2+18)= 64 31+(16-6)= 41 88-(40-10)= 58 36-(35-5)= 6 9+(29-9)= 29 53-(24-4)= 33 50-(25+5)= 20 30-(17-9)= 22 54-(75-70)= 49 76+(6-4)= 78 73-(13+7)= 53 14-(7-1)= 814-(8-2)= 864-(22-2)= 44 43-(4+4)= 35 86-(24+6)= 56 0+(15-2)= 13 10+(44-4)= 50 83-(69-9)= 23 81-(29+51)= 1 33-(28+2)= 3 56-(5-3)= 54 85+(11-2)= 94 62+(28-8)= 82 47-(7+23)= 17 61-(2+18)= 41 38+(43-40)= 41 38-(36-6)= 8 83-(13-10)= 80 49-(19+1)= 29 9-(1+0)= 858-(9+1)= 4862+(29-9)= 82 22+(31-30)= 23 6-(2+3)= 131+(19-10)= 40 19-(9-6)= 16 17+(76-70)= 23 70-(48+2)= 20 84-(47+3)= 34 88-(18-9)= 79 39-(7-3)= 351-(1-1)= 149-(50-20)= 19 64-(46-40)= 58 93-(83+7)= 3 53-(20+10)= 23 96-(64-4)= 36 69-(39-9)= 39 55-(30+10)= 15 9-(6-3)= 689-(62+8)= 1999-(39+1)= 59 7+(12-2)= 17 20-(6+1)= 13 35-(18-10)= 27 18-(12-8)= 14 43-(15-8)= 36 45+(25-5)= 65 39-(38-8)= 9 86-(65-60)= 81 20-(1+9)= 10 49-(76-70)= 43 9-(3-1)= 718-(3+4)= 11 2+(44-4)= 42 19-(6+3)= 10 34-(5-1)= 30 44+(37-7)= 74 77+(13-10)= 80 69-(5+25)= 39 19+(51-1)= 6991-(35-5)= 61 43-(40+0)= 3 44-(24+6)= 14 9+(0+6)= 15 65-(39+1)= 25 28+(20-10)= 38 33+(40-20)= 53 68-(6-1)= 63 58-(19+1)= 38 21-(4-1)= 18 99-(10+30)= 59 43+(55-5)= 93 12-(10+1)= 1 20+(56-50)= 26 67-(38+2)= 27 51+(13+7)= 71 9-(6-3)= 636-(35-5)= 62+(27+3)= 32 60+(35-5)= 9042-(75-70)= 37 71-(32+8)= 31 2+(44-40)= 6 67-(43+7)= 17 28-(3+6)= 19 58-(6+14)= 38 35-(11-10)= 34 41-(11-1)= 31 45-(83-80)= 42 14-(8-2)= 877+(13-9)= 81 64-(22-20)= 62 43-(4+5)= 34 62+(29-20)= 71 89-(62+8)= 19 69-(5+25)= 39 22+(31-30)= 23 6-(2+3)= 131+(19-10)= 40 19-(9-6)= 1617+(76-6)= 87 70-(48+2)= 20 84-(48-8)= 44 88-(18-8)= 78 39-(7-3)= 35 19-(17-9)= 11 49-(50-40)= 39 64-(46-40)= 58 93-(83+7)= 3 12-(5+1)= 620+(56-50)= 26 67-(37+3)= 27 51+(13-9)= 55 92-(20+50)= 22 99-(39+1)= 59 7+(12-3)= 16 20-(6+14)= 0 35-(18-8)= 25 18-(12-3)= 9 43-(15-8)= 3645+(25-5)= 65 39-(38-8)= 9 86-(65-60)= 81 20-(1+7)= 12 49-(79-70)= 40 9-(3-1)= 718-(3+4)= 11 36-(35-5)= 6 60+(35-5)= 90 35-(18-10)= 27 45-(83-80)= 42 92-(44+6)= 42 19+(51-50)= 20 91-(35-30)= 86 43-(40+0)= 3 44-(24+6)= 14 9+(10-6)= 13 65-(39+1)= 25 28+(20-10)= 38 59-(48+2)=9The difference een 59 and the sum of 48 and 2 is 9.16-(56-50)=10The difference een 16 and the result of subtracting 56 from 50 is 10.65-(56+4)=5The difference een 65 and the sum of 56 and 4 is 5.24-(15+5)=4The difference een 24 and the sum of 15 and 5 is 4.29-(13+7)=9The difference een 29 and the sum of 13 and 7 is 9.47-(28+2)=17The difference een 47 and the sum of 28 and 2 is 17.82+(9-1)=90The sum of 82 and the difference een 9 and 1 is 90.6-(4+1)=1The difference een 6 and the sum of 4 and 1 is 1.92-(15-6)=83The difference een 92 and the result of subtracting 15 from 6 is 83.53+(40-20)=73The sum of 53 and the difference een 40 and 20 is 73.26-(6+1)=19The difference een 26 and the sum of 6 and 1 is 19. 53-(21+9)=23The difference een 53 and the sum of 21 and 9 is 23. 30+(67-7)=90The sum of 30 and the difference een 67 and 7 is 90. 80+(5-2)=83The sum of 80 and the difference een 5 and 2 is 83. 15+(39-30)=24The sum of 15 and the difference een 39 and 30 is 24.99-(87-7)=19The difference een 99 and the result of subtracting 87 from 7 is 19.63-(59+1)=3The difference een 63 and the sum of 59 and 1 is 3.59-(26+4)=29The difference een 59 and the sum of 26 and 4 is 29.75-(8-4)=71The difference een 75 and the result of subtracting 8 from 4 is 71.15+(23-3)=35The sum of 15 and the difference een 23 and 3 is 35.3-(1+1)=1The difference een 3 and the sum of 1 and 1 is 1.1+(98-8)=91The sum of 1 and the difference een 98 and 8 is 91.39-(11-4)=32The difference een 39 and the result of subtracting 11 from 4 is 32.78-(66+4)=8The difference een 78 and the sum of 66 and 4 is 8.64+(17+3)=84The sum of 64 and the sum of 17 and 3 is 84.48+(13-5)=56The sum of 48 and the difference een 13 and 5 is 56.62-(53+7)=2The difference een 62 and the sum of 53 and 7 is 2.17-(10-1)=8The difference een 17 and the result of subtracting 10 from 1 is 8.57-(26-20)=51The difference een 57 and the result of subtracting 26 from 20 is 51.51+(32-2)=81The sum of 51 and the difference een 32 and 2 is 81.16-(9-1)=8The difference een 16 and the result of subtracting 9 from 1 is 8.45+(52-2)=95The sum of 45 and the difference een 52 and 2 is 95.13-(12-3)=4The difference een 13 and the result of subtracting 12 from 3 is 4.26-(6-5)=25The difference een 26 and the result of subtracting 6 from 5 is 25.77-(7-2)=72The difference een 77 and the result of subtracting 7 from 2 is 72.9+(87-7)=89The sum of 9 and the difference een 87 and 7 is 89.47-(26+4)=17The difference een 47 and the sum of 26 and 4 is 17.48-(36+4)=8The difference een 48 and the sum of 36 and 4 is 8.56-(38-30)=48The difference een 56 and the result of subtracting 38 from 30 is 48.88-(16-8)=80The difference een 88 and the result of subtracting 16 from 8 is 80.71+(15-9)=77The sum of 71 and the difference een 15 and 9 is 77.71-(59-9)=21The difference een 71 and the result of subtracting 59 from 9 is 21.49+(6-1)=54The sum of 49 and the difference een 6 and 1 is 54.79-(12+8)=59The difference een 79 and the sum of 12 and 8 is 59.95-(62-60)=93The difference een 95 and the result of subtracting 62 from 60 is 93.81+(5+5)=91The sum of 81 and the sum of 5 and 5 is 91.56-(20+30)=6The difference een 56 and the sum of 20 and 30 is 6.44-(2+6)=36The difference een 44 and the sum of 2 and 6 is 36.53-(7-4)=50The difference een 53 and the result of subtracting 7 from 4 is 50.61+(26-6)=81The sum of 61 and the difference een 26 and 6 is 81.59-(32+8)=19The difference een 59 and the sum of 32 and 8 is 19.49-(9-7)=47The difference een 49 and the result of subtracting 9 from 7 is 47.43-(16-7)=34The difference een 43 and the result of subtracting 16 from 7 is 34.54+(38-8)=84The sum of 54 and the difference een 38 and 8 is 84.17-(2-1)=16The difference een 17 and the result of subtracting 2 from 1 is 16.59-(14-8)=53The difference een 59 and the result of subtracting 14 from 8 is 53.73-(38+2)=33The difference een 73 and the sum of 38 and 2 is 33.60-(27-7)=40The difference een 60 and the result of subtracting 27 from 7 is 40.39-(1+4)=34The difference een 39 and the sum of 1 and 4 is 34.63-(22+8)=33The difference een 63 and the sum of 22 and 8 is 33. 79-(61+9)=9The difference een 79 and the sum of 61 and 9 is 9. 68-(33+7)=28The difference een 68 and the sum of 33 and 7 is 28. 35+(46+4)=85The sum of 35 and the sum of 46 and 4 is 85.77+(8+2)=87The sum of 77 and the sum of 8 and 2 is 87.60-(13+7)=40The difference een 60 and the sum of 13 and 7 is 40.99-(35+5)=59The difference een 99 and the sum of 35 and 5 is 59.26-(9+1)=16The difference een 26 and the sum of 9 and 1 is 16.9+(57-7)=59The sum of 9 and the difference een 57 and 7 is 59.65-(40-20)=45The difference een 65 and the result of subtracting 40 from 20 is 45.76-(53-3)=26The difference een 76 and the result of subtracting 53 from 3 is 26.81+(11-8)=84The sum of 81 and the difference een 11 and 8 is 84.54-(24+6)=24The difference een 54 and the sum of 24 and 6 is 24.60-(53-3)=10The difference een 60 and the result of subtracting 53 from 3 is 10.43-(17-9)=35The difference een 43 and the result of subtracting 17 from 9 is 35.86-(8-5)=83The difference een 86 and the result of subtracting 8 from 5 is 83.15-(2+4)=9The difference een 15 and the sum of 2 and 4 is 9.13+(14-5)=22The sum of 13 and the difference een 14 and 5 is 22.54-(11-5)=48The difference een 54 and the result of subtracting 11 from 5 is 48.97-(15-7)=89The difference een 97 and the result of subtracting 15 from 7 is 89.25-(18+2)=5The difference een 25 and the sum of 18 and 2 is 5.83-(31-30)=82The difference een 83 and the result of subtracting 31 from 30 is 82.80+(16-9)=87The sum of 80 and the difference een 16 and 9 is 87.60-(13-5)=52The difference een 60 and the result of subtracting 13 from 5 is 52.18-(9+1)=8The difference een 18 and the sum of 9 and 1 is 8.48-(13-9)=44The difference een 48 and the result of subtracting 13 from 9 is 44.68-(26+4)=38The difference een 68 and the sum of 26 and 4 is 38.52-(28-8)=32The difference een 52 and the result of subtracting 28 from 8 is 32.42-(2+5)=35The difference een 42 and the sum of 2 and 5 is 35.16-(1-1)=16The difference een 16 and the result of subtracting 1 from 1 is 16.22-(3+6)=13The difference een 22 and the sum of 3 and 6 is 13.19-(2-1)=18The difference een 19 and the result of subtracting 2 from 1 is 18.92-(70+10)=12The difference een 92 and the sum of 70 and 10 is 12. 39+(13-5)=47The sum of 39 and the difference een 13 and 5 is 47. 30-(12-9)=954+(13-4)=6322-(9-1)=1443+(14-8)=4917-(9-4)=1212-(8+1)=335-(17-8)=1080-(14-6)=6014+(13-6)=2128+(59-9)=7817-(14-5)=819-(18-10)=1197-(26-20)=71 59-(4+3)=52 66-(33+7)=26 87-(17-8)=62 34-(9-4)=29 70+(16-9)=77 65+(6-3)=68 52-(15-8)=29 38-(22-2)=16 35-(16-7)=12 57-(16-8)=33 10+(11-9)=12 74-(14-4)=60 89+(8-5)=92 40-(8-5)=27 90-(15-6)=69 73-(71-1)=3 90-(3+77)=10 4+(5-5)=440-(29-9)=2040-(23+7)=10 19-(9-2)=10 51-(15-7)=29 47-(33-3)=17 41-(17-9)=15 22-(2+7)=13 63-(10-1)=54 41-(12-6)=23 51-(13-3)=35 16-(7-6)=15 67-(11-5)=51 59+(13-8)=64 76+(2+5)=83 31-(16+4)=11 17+(14-7)=24 5-(2-1)=486-(13-6)=77 71+(4+5)=80 41+(4+3)=48 26-(4+4)=1855+(2+7)=64 46-(16-9)=39 16-(4+6)=6 63-(6+2)=55 63-(13+7)=43 35-(3+2)=30 17-(16-7)=8 23+(11-2)=32 4-(2-1)=328-(7+13)=8 18-(6+2)=10 38-(12-5)=21 56+(6+14)=76 9+(5-3)=11 55-(9-1)=47 11-(6+4)=1 17-(11-1)=7 41-(15-6)=20 70-(14-8)=64 54-(10-5)=4975-(14-5)=56 58-(16-7)=35 32-(2+4)=26 10-(9-4)=528-(12-7)=9 84+(14-8)=90 44-(13-4)=27 10-(8-6)=823+(15-8)=30 42-(15-8)=19 55-(12-3)=40 60-(13-5)=42 61+(26-6)=81 36+(50-20)=66 84+(15-9)=90 49-(16-8)=25 19-(17-9)=11 83-(69-9)=23 51-(15-9)=27 38+(15-9)=62Rewritten:1.Solve the following n problem: 30 minus the quantity 12 minus 9.The answer is 9.2.Add 13 to 54 and then subtract 4.The answer is 63.3.Solve the following n problem: 22 minus the quantity 9 minus 1.The answer is 14.4.Add 14 to 43 and then subtract 8.The answer is 49.5.Solve the following n problem: 17 minus the quantity 9 minus 4.The answer is 12.6.Subtract 8 and 1 from 12.The answer is 3.7.Solve the following n problem: 35 minus the quantity 17 minus 8.The answer is 10.8.Solve the following n problem: 80 minus the quantity 14 minus 6.The answer is 60.9.Add 13 to 14 and then subtract 6.The answer is 21.10.Add 59 and 13 and then subtract 9.The answer is 78.11.Solve the following n problem: 17 minus the quantity 14 minus 5.The answer is 8.12.Solve the following n problem: 19 minus the quantity 18 minus 10.The answer is 11.13.XXX: 97 minus the quantity 26 minus 20.The answer is 71.14.Subtract 3 and 4 from 59.The answer is 52.15.Subtract 33 and 7 from 66.The answer is 26.16.Solve the following n problem: 87 minus the quantity 17 minus 8.The answer is 62.17.Subtract 9 from 34 and then add 4.The answer is 29.18.Add 16 to 70 and then subtract 9.The answer is 77.19.Add 6 to 65 and then subtract 3.The answer is 68.20.Solve the following n problem: 52 minus the quantity 15 minus 8.The answer is 29.21.Solve the following n problem: 38 minus the quantity 22 minus 2.The answer is 16.22.Solve the following n problem: 35 minus the quantity 16 minus 7.The answer is 12.23.XXX: 57 minus the quantity 16 minus 8.The answer is 33.24.Add 11 to 10 and then subtract 9.The answer is 12.25.XXX: 74 minus the quantity 14 minus 4.The answer is 60.26.Add 8 to 89 and then subtract 5.The answer is 92.27.Solve the following n problem: 40 minus the quantity 8 minus 5.The answer is 27.28.XXX: 90 minus the quantity 15 minus 6.The answer is 69.29.XXX: 73 minus the quantity 71 minus 1.The answer is 3.30.XXX: 90 minus the quantity 3 plus 77.The answer is 10.31.Add 5 to 4 and then subtract 5.The answer is 4.32.XXX: 40 minus the quantity 29 minus 9.The answer is 20.33.XXX: 40 minus the quantity 23 plus 7.The answer is 10.XXX: 19 minus the quantity 9 minus 2.The answer is 10.35.Solve the following n problem: 51 minus the quantity 15 minus 7.The answer is 29.XXX: 47 minus the quantity 33 minus 3.The answer is 17.XXX: 41 minus the quantity 17 minus 9.The answer is 15.38.Solve the following n problem: 22 minus the quantity 2 plus 7.The answer is 13.XXX: 63 minus the quantity 10 minus 1.The answer is 54.40.Solve the following n problem: 41 minus the quantity 12 minus 6.The answer is 23.41.Solve the following n problem: 51 minus the quantity 13 minus 3.The answer is 35.XXX: 16 minus the quantity 7 minus 6.The answer is 15.43.Solve the following n problem: 67 minus the quantity 11 minus 5.The answer is 51.44.Add 13 to 59 and then subtract 8.The answer is 64.45.Add 2 and 5 to 76.The answer is 83.XXX: 31 minus the quantity 16 plus 4.The answer is 11.47.Add 14 to 17 and then subtract 7.The answer is 24.48.Subtract 1 from 2.The answer is 1.49.Solve the following n problem: 86 minus the quantity 13 minus 6.The answer is 77.50.Add 4 and 5 to 71.The answer is 80.51.Add 4 and 3 to 41.The answer is 48.52.Solve the following n problem: 26 minus the quantity 4 plus 4.The answer is 18.53.Add 2 and 7 to 55.The answer is 64.XXX: 46 minus the quantity 16 minus 9.The answer is 39.55.Subtract 4 and 6 from 16.The answer is 6.56.Subtract 6 and 2 from 63.The answer is 55.57.XXX: 63 minus the quantity 13 plus 7.The answer is 43.58.Subtract 3 and 2 from 35.The answer is 30.59.Solve the following n problem: 17 minus the quantity 16 minus 7.The answer is 8.。

二年级100以内加减除法混合口算题带括
号
本文档将为二年级学生提供一系列100以内的加减除法混合口算题，并带有括号。

这些口算题旨在帮助学生巩固他们在数学方面的基础知识，并培养他们的解决问题的能力。

以下是一些口算题的示例：
1. (15 + 7) - 4 =
2. (20 - 6) + 9 =
3. (18 - 9) ÷ 3 =
4. 10 + (5 - 2) =
5. 25 - (12 + 4) =
6. 24 ÷ (8 - 2) =
7. 15 + (4 - 7) =
8. 30 - (9 + 15) =
9. 28 ÷ (7 + 1) =
10. (16 + 9) - 10 =
通过这些加减除法混合口算题，学生们将能够熟练运用数学知识，理解括号在口算问题中的含义，并学会使用正确的计算步骤来
解决问题。

这些口算题可以通过课堂练、作业或小组活动的形式使用。

学
生们可以使用纸和计算器来解决这些问题，以培养他们的计算能力
和解决问题的技巧。

教师可以根据学生的能力和进度，逐步增加口算题的难度。

通
过不断练这些口算题，学生们将能够更好地掌握数学的基本操作，
提高他们的数学能力和自信心。

为了保证学生的研究效果，建议教师在口算题练之后提供答案
和解析，便于学生进行自我评估和纠正错误。

希望这些加减除法混合口算题带括号能够帮助到二年级学生们，提高他们的口算能力，同时培养他们的数学思维能力。

二年级100以内加减法混合口算题带括号
引言
本文档提供了适合二年级学生的100以内的加减法混合口算题，包括带有括号的题目。

这些题目的设计旨在帮助学生巩固对加法和
减法的理解和应用能力。

题目示例
以下是一些示例题目，供学生练使用：
1. (9 + 7) - 6 =
2. (13 - 6) + 4 =
3. 5 + (8 - 3) =
4. (12 - 4) - 3 =
5. 9 - (2 + 5) =
6. 6 + (4 - 1) =
7. (11 + 4) - 7 =
8. (15 - 8) + 2 =
9. 7 + (9 - 6) =
10. (10 - 2) - 3 =
使用指南
学生可以按照以下步骤进行练：
1. 将题目的答案写在纸上。

2. 计算括号内的数学运算，然后计算括号外的数学运算。

3. 将计算结果填写在题目空格中。

注意事项
- 学生在计算括号内的数学运算时，需要先计算括号内的加法
或减法。

- 学生在计算括号外的数学运算时，需要按照正常的加法或减
法顺序进行计算。

结论
本文档提供了适合二年级学生的100以内的加减法混合口算题，带有括号的题目可以帮助学生更好地理解和应用加法和减法的概念。

这些题目的练习将有助于提高学生的口算能力和数学运算能力。

100以内加减混合计算题带括号题库介绍本题库包含了一系列的100以内加减混合计算题，其中部分题目带有括号。

这些题目旨在帮助学生练习在100以内进行加减运算，并提供了一些挑战性的题目进行思考和解答。

每个题目都有其解答，供学生对答案进行自我检查和纠正。

题目列表以下是题库中的一部分题目：1.24 + 17 - 82.(18 - 10) + 73.45 - 9 + 164.(39 + 8) - 235.33 - 10 + 276.(14 + 16) - 127.62 - (19 + 14)8.(28 - 12) + 59.88 - 33 + 1910.45 + (35 - 20)解答列表以下是题库中题目的解答：1.24 + 17 - 8 = 332.(18 - 10) + 7 = 153.45 - 9 + 16 = 524.(39 + 8) - 23 = 245.33 - 10 + 27 = 506.(14 + 16) - 12 = 187.62 - (19 + 14) = 298.(28 - 12) + 5 = 219.88 - 33 + 19 = 7410.45 + (35 - 20) = 60使用方法1.从题目列表中选择一个题目。

2.将题目中的计算式进行计算。

3.对比计算的结果与解答列表中的答案。

4.如果答案正确，继续进行下一个题目；如果答案错误，重新计算。

注意事项•在计算加减混合题目时，注意运算符的优先级。

首先计算括号内的运算，然后按照从左到右的顺序进行计算。

•在计算过程中，可以使用笔和纸来辅助计算。

•如果遇到困难的题目，可以向老师或同学寻求帮助。

结语通过解答这些带有括号的100以内加减混合计算题，学生们可以提高他们的计算能力和思维逻辑能力。

这些题目既有简单的题目，也有较难的题目，适用于不同水平的学生。

希望这个题库可以帮助学生们更好地掌握加减运算，并提升他们的数学能力。