五学年计算题天天练

Part1:口算8.76×0.5= 5÷2.5= 4.75-0.98= 0.54+3.27= 7.47+2.86= 37.35+6.97= 3.6×5.9= 8.4÷12= 10.3-8.7= 3.4+5.9=Part2:脱式计算0.32×99+25×0.07 8.76×4.5-15.7×0.14（13.6-4.17）÷2.5 15.32×4+4.68÷0.25Part3:解方程4×4.5-3χ＝6.36 5.1χ-3.5χ＝0.8χ÷12.5＝8 8χ＝4Part1:口算0.37×4＝ 7.49+12.8＝ 16.2÷40＝ 15.32-13.6＝ 1.2÷0.8＝0.68+3.75＝ 21.5+6.8＝ 0.6×69.3＝ 310÷50＝ 22.7-6.58＝Part2:脱式计算（58.4+15.6）×2.3 168-3.76×20+7.380.8×[（5-0.68）÷1.2] 2.5×3.2×12.5Part3:解方程χ÷1.36＝5.4 0.75χ＝30.5χ-0.2χ＝15 6÷30＝χ÷0.5Part1:口算169÷13＝ 10.3-1.42＝ 90×2.14＝ 3.57+4.64＝ 156÷40＝8×6.34＝ 1.57+7.46＝ 10.8-5.13＝ 135÷30＝ 4.96+2.25＝Part2:脱式计算3.9+（10-0.6）÷8 9.56×4.25+0.25×4.40.27×1.9-0.83 48×2.7-1.8×15_Part3:解方程1.25-3χ＝0.5 1.4÷4χ3.5÷χ（χ-0.4χ）÷1.4＝3.3 4χ-0.4＝8.4Part1:口算+ ＝ - ＝ + ＝ + ＝ - ＝+ = + = + = - = + = Part2:脱式计算-（ + ） + ++ + + -（ + ）2 1 20 173 23 14 13 16 14 18 5 32 51 12 5 12 7 6 1 8 5 734 3 65 72 5285 9 83 19 25 415 1110 39 2 5 4 9 2 5 1 207 125_Part3:解方程χ+ = χ- =χ- =1 χ- =Part1:口算- = 1- - = + -2= + = + - =- = - = - = + = + = Part2:脱式计算+ + = + -125 5 4 2 1 73 43 12583 6 5 10 120151 3 1 37 5 2 101 414 2 51 5 12 1 4 1 5 1 15 13 5 2 7 9 61 5332 5 4 2 13 12 13 1 41 75 6 5 85 12 5 1513_+ - 2- -Part3:解方程χ+ χ=28 χ=45χ- = +χ=Part1:口算- = + = + = - = - =- = + = + = - = - = Part2:脱式计算+( - ) - +5 4121 2 1 5 2 52 1035 46 1 216 5 8 3 5 4 3 27 38 3 8 1 12541 12 1 2 1 9 4 8 7 6 1 9 5 7452 152 6 5 7 38 3125 31 85_-( - ) -( + )Part3:解方程2χ- = χ+ =-χ= χ-( - )=Part1:口算× = ÷ = ÷ = ×30 = + =10.8÷0.9= 1.5×0.25= 0.5×3.2= × ×14= 9-2÷8=Part2:脱式计算103 12 7 98 9241 2 1 12 11 6 56131 7612 7 4 1 24516 7 24743 65 65 53 61 5361 152 73 3 1125 9 1 83 54 41 87 195_（ + + ）×72 （ - ÷ ）×÷[( + )× ] ÷( - )×( - )Part3:解方程χ- χ= 2.5χ+3.6=9.61 -3χ= 1 ÷4=3.5÷χPart1:口算2.8÷0.25= 2.75+1 = 3 +10.2= 0.125×8= 6.3÷0.07=6 5 3 2 4 3 34 3 94 65 2 1 65 215 26 1 1514 4 1 21 52 41 541-0.1= - = ÷ = - = 7.5× = Part2:脱式计算9 ×4.25+4 × × + ÷548×( + + ) ( + )×6+Part3:解方程2χ+2.7=24.7 χ- χ=9÷χ= ÷ χ+ χ=424 1 127 5 1 53 7 6 54 43326 54 16 154 76 51 6 5 63 12763 137 942110 5 1 31 32 21Part1:口算305-199= 6.7+4.3= 0.3+0.32= 8÷0.02= 2.05×4=+ = 12÷ = + = ÷ = +0.4= Part2:脱式计算11×( + )×7 ×101-9÷25560÷16÷5 6÷ - ÷6Part3:解方程+χ= χ- =0.253 2 1036 5 9 1 5 2 6 1 4 3 61 8311 27 125 976 76 94 6 5_4χ- =8.4 ÷χ=7÷Part1:口算3.2-2.7= 0.125+ = 0.75- = -0.5= ×0.5=×1.2= × = ÷ = + = - = Part2:脱式计算（ + ）÷ 10÷[ -( ÷ + )]×[ ÷( + )] ÷7+ ×Part3:解方程12÷14=χ÷3.5 4.2χ- =102 724 752 9 4 218 7 4 1 32 526 5 8 3 21 4 9 2 18 5 9 2 65 4383 15 1438135 265 52 83 9 8 6 5 43 114114 76 5121.6÷χ=1.2-0.4 χ÷3.14=3Part1:口算10-0.76= 4.8× = 0.6+ = +0.2= +0.125=0.4- = + = - = - = ÷ = Part2:脱式计算24×( + - ) ( + - )×30( + )÷ + 68×3.5-40.8÷0.243 4 107 43 41 53857 1 2 1 3 1 9 1 5 6 65 3173 4 3 6 5 3 25 26 1 1525 4 4 1 3 7Part3:解方程÷χ=0.15÷0.18 χ- χ-5=180.4χ+ χ= ÷ 1.2=0.8 ÷χPart1:口算0.68×50= 18.84+1.5= 8.3-3.4= 3.9×0.3= 8.6×8=+ = ÷3=× = + = + = Part2:脱式计算4.3÷ +7.7 × ÷(1÷ -2.5)+(736÷16+37 ) ×18 ( + - ) ÷23 11 9 23 32 5 1 30 7 52 83 3 2 3 24 35 2 4 3 5 14 15 66 5101 528 7 6 5 125 24 1Part3:解方程χ+ χ=66 ÷χ=0.75÷1.8χ- χ- =1 =0.12÷1.5Part1:口算0.25×104= 736+37= 0.7×68.3= 5.4-3.9= 0.24×5=+1.2= 3÷ = + = - = - = Part2:脱式计算( + - ) ÷ [ -( - )] ×5 2 χ6.4 11 5 4 3 6 1 345 4 5 1 4 3 3 2 8 3 92 5241 52 6 5 15 7 30 1 6 5 14 5 7218732 92 8 7 165 43 75 41 53_( + )× ( - ) ÷[ ×( - )Part3:解方程χ- χ= 3.2χ-2χ=189χ+13.5=16.2 ÷ = 0.8÷χPart1:口算14÷35= 0.77+0.33= 3.14×4= 0.3+ = 22.3-19.5=+ = + = - = × = ×4+4× =Part2:脱式计算2+0.45÷0.9-0.75 (9.7-2.15-4.85)÷0.94 35 3 5 1 101 20 3 21 6 13 1 7 6 54 2 15 27 5 15 14 5451 83 54_+6.4× × + +Part3:解方程3χ÷3.5= +0.3(χ+ )= χ+0.11.2(χ- )÷ =0.75 (9-7.6)χ- =χ+2.4Part1:口算3×0.64= 7÷1.4= 18÷360= 2.1+ = 8 -2.5=× = 81÷ = - = + = ×2 =Part2:脱式计算÷[ -( + )] ( + - )÷32 9 2 1 15 14 12 7 5183 7 8 5 3 1093221 41 52 54 5 3543 2 5 34 95 1 51 1115 21 1115 114 51 6 5 4 1 12 5 121_10.26-3.78+ 0.65×14-Part3:解方程(3.7+2.8)χ- =12.75 + χ=( -0.4)χ+0.25=χ- ×(χ-1.2)-0.72=0.3χ+Part1:口算4.32-1.74= 3.65+0.47= 0.4×25.2= 135÷30= 64.1-35.3=100315011 149 12125 12 1130 7 94 83 152 94 163 156× = × = 5×3 = × = × =Part2:脱式计算56 ÷27+8 ×0.875 (11.1×66-18.5×8)÷3.7[7-(1 × +1 × )]÷1.75 125 -(11 -4 +12.25- )Part3:解方程12÷(χ+ )=1.2 χ- χ== χ+ χ= 4213 19 44 3 8 7 5483 27 4.5 0.8Part1:口算4.7-3.72= 6.57+13.6= 2.39-1.4= 9.2-4.47= 62.4+37.92=- = + = - = + = ÷1 =Part2:脱式计算2 +1 ×2 6 -1 ×10 ÷2 - 1 + ÷Part3:解方程+2χ= 5χ-3× =4 1 21107 5752 43 5 9 54 103 3 13 210 743 72 32 6 56 1 3 1 61127 97 5 1 7 1 2 1 7 2 3 1 81 24 1 8 1 54 313χ- × = χ- χ=1Part1:口算6.4-3.65= 3.5+12.75= 24.3-12.58= 34.26+78.9 24-0.15=- = × = ÷ = - = + = Part2:脱式计算 16-(9 + ÷ ) (3 -2 × )÷4( - ÷2)× 2 ×(10-3 )÷Part3:解方程2(χ+ )=3χ-5 - χ- χ=21 1514 41 61 31 323 1 12 15 2 32 4351 4 1 10 113 10 251 3 154 5 4 8310 1 7 5 10 3 8 3 65 7361 32_90× + χ=20 0.2χ+ =8-1 χPart1:口算249+49= 312.4-11.48= 426.1-42.49= 461-414.1= 240.15-48.1=× = + = - = ÷ = - =Part2:脱式计算4 ÷16+3 × 15-3 ÷ ×22 - ×2+1 ÷ - ×2 1 5 4 53742 1 7 2 9883 71 92 9 2 2 1 5151 51 51 7 4 8 5 9 46 1 9 57 2 53 4387 43_Part3:解方程-χ= χ+2 =4.25χ+ χ=121 χ-(1 + )=4.5Part1:口算42.15+3.48= 34.45+349.5= 84.26+24.66= 94+32.8= 15.15-9.2=÷ = - = - = + = + = Part2:脱式计算1÷ + ×(3 ÷2 ) (2-3 × )÷(4 ÷3 )1 ÷(1 × + ÷1 ) 3 + ×(1 - )÷211103 2 12 74 1 3 2 3 2 616 1 111 211 95 15 152 55 44165 15 8 4 3 18 7 7 45115 7 245 83 9 72 1 95 7 2 14 5 3 2 8 5 7 56 1 31 9 7 6543_Part3:解方程(χ+ )×7=8.1 37.5+ +χ=69= χ-1- χ=2Part1:口算16.43+8.48= 292.4-72.56= 245+28.1= 10.01-5.4= 183+873=× = + = - = - = ÷ = Part2:脱式计算(1 +6 +2 +3 )× [9-( + )×24]÷1 3.6 χ1.2 53 2 8 5 3 1 8 3 14153 81 121 9192 52 74 20 7 2 1 54 8 7 4 38 1 6 1 9 5 83 74 5 2 3265_1 ÷ -1 ×1 +32 +1÷3.8×3 -3.5Part3:解方程χ- + = χ- χ= χ+ χ=11 + χ=Part1:口算156.4+87.82= 25.42-12.8= 21.1-9.42= 63.1-4.2= 46.5+63.9=+ = - = ÷ = × = + = Part2:脱式计算(1 × +5 ÷ )÷11 (8.25-6 )÷(2 +4.2)×710 7 5 1 326532 121 7343 4 1 4 3 21 13 8 42 13 7 5 21 8 8 5 154317 2 4 3 53 8 5 95 18 1 76 15721 5 3_[1-(4 -1.25×2)]÷3.5 1.25×3.9×2.1÷(3.5×2.5×0.39)Part3:解方程2χ+ =4.625 -2χ= -3χ= +21.5= χPart1:口算9.82+4.5= 241-34.1= 45.6-42.26= 63.75+62.5= 47.16-24.8=+ = - = + = × = 0.25÷ =Part2:脱式计算855441 8716 11 21 983 1 10.5×7.23.6×2.1+3.5×2.4 133 32 43 6 1 9 25 2 8 5 43_(7.8×1 -4.6)÷1113 +886 ×0.25+0.625 3 ×25 +37.9×6Part3:解方程χ- χ=0.2 χ+ =1 ×3+2.75χ=6 9 χ=5 ×1Part1:口算10.58-5.8= 456.4+369.45= 434+147= 34.15-23.5= 482.4-64.23=3 1 9 572 2 13 1 2423 43 856 1 71 19 552 527 5 87 74 274+ = - = ÷ = × = + = Part2:脱式计算383 ×7.9+79×61 6.8× +0.32×42-8÷2541 × +51 × +61 × (5 -0.8+2 )×(7.6÷ +2×1.25)Part3:解方程5.6χ- χ=4.8 χ- χ=2.4-1 =3.2-χ 1 -2χ=3131 2 1 21 41 53534 3 8 53 14 3 4 15 45 1 6595 9 4 5 452 6 55 1 5 3 9 4 9 7 14372 7 653Part1:口算37.78+3.65= 482.4-39.8= 24.15-8.3= 341.92+74.2= 357+159.2=× = - = + = - = ÷ = Part2:脱式计算(9 +7 )÷( + )÷34Part3:解方程3χ- χ= (1- )χ=4 3 1005119184 3 (0.22-0.2065)÷(3.6×0.015) 0.00325÷0.01372 75 95 92 5 -4÷5 (4 +0.75)×3 7 2 3 213 945 4 6 1 158 18.25-5 × 3 0.1+ +7 ÷1.255 2 8 1 51 2 1 95 4 3 9 161 65 72 43 7 1 8 7÷χ=0.8 4( +χ)=7Part1:口算167-88= 35.4÷0.5= 42.3×0.4= 87.5+23.61= 54.5-4.26=÷ = + = + = - = - = Part2:脱式计算( + + )×2 16.8×[(2.4+ )÷1.12-1 ]8.4×[(1.2+3 )÷3.4- ] ×1.375+215×Part3:解方程÷χ= χ÷ =30 54 51 25 4655 4 72 30 135 163 13 165 312 119 18 191 8312 7 7 4 8 3 7 5 3 1 21 755 4 98 9 7χ÷ = ÷ (χ+3)× =48Part1:口算137.8+4.4= 134.2-54.89= 15.8+348= 201.4-24.51= 463.1-82.4=- = + = - = + = + =Part2:脱式计算[24.8+(3 -2.5)×2 ÷10]÷3 1 +[2 -(2 -1.875)]÷2[2 -(8.5-2 )÷3.5]×7 [4 ÷(2 -1 )-9 × ]×1213 1 35 6 45 26 25 13 9 213 108 14 3143 14 3121 43 215 3111 9 2 1 7 4 2 13 2 5 3 5 1 5 1 6 1 3 14165 92 3 1 152 10 7Part3:解方程÷ χ= ÷ 2 ÷χ=2(13-χ)× =6 2χ+1 =2Part1:口算133-54.2= 34.8+46.62= 534.68-26.8= 45.15+39.8= 8.64+37.6=- = - = - = + = + =Part2:脱式计算1 ÷[2 - ×(1.7+1 )]×0.16 [2-(5.55×1.4-2.7÷0.4)]÷0.1350.625×(1 +3 )+ ÷1 - [26.5× -(8.3-7 )+4÷2 ]÷11121 8 54 3 4325 18 7 3 257 35 6 107 3 1 29 12 513 2 6 1 6 1 5 3 8 5 8 3 40 37 2 13241 5 3 10 7 5 3 4 1 6 5 3 1 73 43127 94Part3:解方程χ+(3χ-16)÷ =10(χ+1) 7(6.5+χ)=87.50.1(χ+6)=3.3×0.4 3 χ+1.2χ=25Part1:口算19.2-4.82= 14.1÷0.2= 165.4+37.56= 3.25+48.5= 154.3-64.12=+ = - = - = - = + =Part2:脱式计算[(11 -3 ×1 )-8 ÷3.6]÷2 ÷2 -1 × ÷7+ ×4 15 49 153 17 25 225 61310 29 195 2 13 11 5 1 6322 87 1005114 11 11 5 8 313 7 52 43 536 5[( +4 ÷1.5× )÷2 -0.83]÷ 4 - +0.125-3Part3:解方程- =1 2χ- =2+- =2.5 χ- =2-Part1:口算4.7-3.9= 46.1-45.61= 81.37+23.9= 93.18+82.55= 56.1-34.51=+ = + = - = + = + =Part2:脱式计算[0.314÷15.7+(3-1.47)×6 ]÷102.2×( -0.375) 1 ÷0.25×23 2χ+1 3χ-1 3χ+24 χ-32 χ+12χ+12 χ-13χ+216 7 417 4 8 3 5 3 28 7 328 5 52 4175 7 2 9 211 5 13 5 9 4 5 4 547 2 9 3(0.873× +0.127× )×5 24×( -0.25+ )Part3:解方程χ-0.95×4=8.5 - =50- =1 - =0.5χ+2Part1:口算3.58+6.8= 184.4-65.7= 36.6+14.84= 20.36-18.5= 37.8+69.32=+ = - = + = - = × =4 30.5χ-30.2 χ+4 0.7 χ 0.03 0.17-0.02χ5 20χ-10 510χ+305 2 27 5 27 5 8365 5 3 83 12712 11 73 52Part2:脱式计算 ( - ÷2)× +1÷1 (1 + ×1 )×0.6253.28-2 +6.72-5 6 ÷0.8+1 ×1Part3:解方程- = 0 +1 == -1 - =1Part1:口算23-χ3 χ+4 62χ+1 4χ+523χ-15 4χ-64 χ+262χ-353 11911 2 41 4110 113 3 12 1 25 18 25 119 1 94 9 2 6 111 6 13 515.06-8.9= 34.8+66.91= 498.6-49.26= 69.4+24.16= 0.2×45.5=0.39÷ = - = - = + = + = Part2:脱式计算[5-3 ÷(1 +2.25× )]÷ 1 ×(1.4- - + )(3 -1.5+4 )×120 ( +1 ÷ )×2Part3:解方程+χ=3+ - - +3=0×(χ+10)= ×(5χ-6) 0.75+ χ=6 15 7 4 χ-2 31+χ5 χ-2 10 χ+3 32χ-55 4 5 1 4321 81 87 3 18 7 8 1 3 1 6 1 6 5 3 1 5 2 9 4 211674 20 13 4 1 4 3 6 16 185 7 253Part1:口算985+458= 12.4-9.47= 30.1÷0.2= 64.65+426.9= 132.59-85.8=- = 2.4× = - = + = + =Part2:脱式计算1.25×3 -1 +9.2× 7 ×5.2+15.2+2 ×7(16.25-13 )÷1 + ×3 ÷(1.1- )+×Part3:解方程=(χ+7)÷11 + χ=59 χ 2 1 4 1 4 3 5 1 5 447 121111 1 53 54 5 34 55 44 18 χ 4 3 12 5 12 5 8 1 94 12714 9 21 15 4 6 118:0.2=χ: 1.2:χ=5:1.5Part1:口算0.3×51.9= 16.84+924.3= 751.7-46.82= 45.9+3.21= 46.42-38.5=+ = + =×0.32= - = - = Part2:脱式计算 ×(2.5- )+ ÷0.25 4 ÷ -1.4×(1- )3.56×2 -1.56×2 -2 2.4÷ -9.6× +6 ×1.5Part3:解方程4 3 7 3 7 3 7 3 4 3 4 3 4 1 12 552 313254 4 1 5χ54 12 516 5 16 9 4 3 10 3 16 3 103 154 85_χ+ =240 χ- χ=1.2:2.5=6:χ 12:1.4=3χ:3.5Part1:口算121.4-25.74= 319.6+62.43= 34.11-17.7= 37.45+24.18= 41.7÷3=÷4= - =÷0.4= + = - = Part2:脱式计算1 [7 +(14.625-3 )-4 ] ×5 - ÷0.35 +(11.7-8.4×1 )÷12 ×3.5×3 -1 ×93 23 18 16 52 13 241 21103103 32 109 7 2 41 92 11 8 13 9 52 4 1 103 21 101_Part3:解方程6.4:2χ=12:1.5 χ-0.45=63 -(0.83+χ)=1.4 4(χ-5.6)=1Part1:口算24.2÷0.4= 56.8+54.62= 34.29-24.5= 292.4-74.6= 6.66+54.8=÷0.6= - = + = + = - =Part2:脱式计算84 ÷14+16 × -(1- ) ( - ÷2)×21× +0.32× - ×12+ ×0.32 2 ×(10-3 )÷73 139 72 134 2 1 21 14 1 14 1341 101 1310 25 1 31 54 41 4 3 5 374 53 5 3 61 15 27 3 15 4 9 2 8 5_Part3:解方程45×(χ-83)=36(χ-75) 48×(34-2χ)=56(χ+2)24×(2χ-63)=18×(χ+16) 6.3×(1.8+χ)=8.4×(1.6-χ)Part1:口算74.9+34.81= 0.04×24= 68.2-16.52= 34.16-16.5= 46.5+3.69=- = × = + = ÷ = + = Part2:脱式计算× - ÷0.5 ÷ ÷0.9-18 11 12 5 4 3 4 1 61 7 5 41 10322 15 25 11 11 2 31 24 7 61 12 592_(0.5+ - )÷ 0.25÷(0.3÷ )×0.6Part3:解方程+0.9=1 χ÷1.1- =×(χ+6.3)=2 ÷(1.2-χ)=Part1:口算0.5×5.48= 13.35-4.68= 248.2+32.48= 21.45-14.8= 49.01-11.4=+ = - = - = × = ÷ = Part2:脱式计算0.6- ÷0.3× +0.5+ ÷ 7 3 1312394 5 1 7 17 1 724 1 101 41116 7 2 70 143 433065 5 1 103 10974 28 15 10 75 4 11 9 31 9 5 11 4_( + )÷0.4-0.125 ÷(0.8÷ )×0.4Part3:解方程+ χ- = +χ÷0.1=6( +χ)×2.9=11 (χ+9.3)÷3.9=2Part1:口算76.84+32.4= 290.2-54.32= 23.58-19.8= 63.3÷0.6= 24.7+54.63=73 203 78355 35 3 4 3 41 216 1 6 1 9 8 5 35 26 5 3252 43 41 91 98 986÷ = - = + = × = ÷0.4=Part2:脱式计算+ ÷0.9× + ÷ ÷0.1÷ ×(0.4+0.7) ×(0.1÷ )+0.5Part3:解方程+ χ= + ÷χ=1×(χ+5.1)=3 ×(χ÷ )=2 14 181 3 23 29210 1 10 7 417 4 858 5 19 10 18 7 181 4 310 93 2 43154Part1:口算0.3+0.32= 10.8÷0.9= 9-2÷8= 43.15-34.6= 94.8+45.62=4÷ = + = - = + = × =Part2:脱式计算÷0.9+0.9- ÷0.4- ××(0.5-0.1÷ ) 0.25×(0.4÷ ÷ )Part3:解方程5(χ+4)+6=12(χ+1)-7 - =4 3 2518 245 92χ+17 3 2 1 8 172 7 4 5 25 1103 52 10165 65 3χ3 1 94 115 81 4 3 32 5 4 9 4- = χ+ =Part1:口算2.8÷0.25= 19.68+34.2= 152.14-3.54= 51.15-31.5= 15.6×0.7=× ×14= - = × ÷ = ÷ - ÷5= ( + )×30= Part2:脱式计算+0.4- ÷ ÷ × ÷0.6 ×( × )÷ ×( × )+Part3:解方程2(χ+1)÷3=24÷36 (χ-1)= (χ+1)7 3 2 1 5 1 5 4 53 61 41103 101 101 5 4 218 1 10 1 3221 32 15 14 61 4 3 6 5 9 5 6 5 6 1 6 55 3 61χ+0.8=1 χ+ ÷ =Part1:口算18.95-6.76= 8.64×3= 132.7-29.61= 16.68÷0.4= 39.29+16.37=+ × = ＋ = 7.5× = ÷×Part2:脱式计算× ÷0.4+0.7 0.5— ÷ +0.3+ ×( ×0.9) ×( ×0.6- )5 3 10 7 5 473 6053 10 3535 46 16 1 3 16 5 3185 8 7 10 36 1 6 5 9 11276 5 32 7 6_Part3:解方程12χ: 5=48: 20 (χ+1): 10=(χ-1): 5(χ+0.9)×0.7= χ+ =Part1:口算46.15-32.5= 56+24.15= 745.5+64.85= 94.2-4.42= 54.56+87.8=( + )×6+ = 12÷ = ÷ = ( + )÷ = + = Part2:脱式计算 + ÷0.1+0.3 ÷0.9× -×0.6×(0.125+ ) ÷( + ×0.7)54 15275 56 2 1 8 1 2 14 191 8 1 4 1 6 5 5 410 9 6 5 13 113 7 4 3 6 1 15 14 20 72741 32 32_Part3:解方程(3χ+1): (χ+1)=2:1 (4χ+3): 5=χ: 1χ- = - χ=Part1:口算128.4-76.54= 34.5+87.15= 15.2÷50= 184.25-64.5= 58.4+64.76=× + ÷5= + = 6÷ = 1÷3× = × =Part2:脱式计算4 ×2 +4 ×4 +6 ×4 4 ÷16+3 ×83214 8 7 16 1 32 19491473 498 137 13713 7 71 72 747 4 2 1 72 32 71 51 54 65 98 83 54 7 6 7 65 26 17 6 3 1_[(3 -2.75)÷1 +2 ]÷2 15-3 ÷ ×2Part3:解方程- χ= ÷ χ=+ χ= × χ=1Part1:口算2.75+19.3= 0.9×18.5= 19.4-6.54= 32.8+56.42= 631-67.9=÷ = 56× = + = - = 3.6× = Part2:脱式计算3.14×4 +3.14× -0.314÷ 1÷ + ×(3 ÷2 )4322 3312 7 222 33 222 3 10325 18 15 1 11 9 11 2 5534 51 1 6 519 11154 7 38 3 149 18 5 9 2 9 4。