异分母分数加减混合运算习题

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. 56 +49 = 710 -15 = 35 -14 = 5- 41=

512 + 712 = 2 + 49 = 78 +12 = 14 +13 =

45 -23 = 710 - 15 = 13 - 524 = 57 + 514 =

89 + 16 = 34 + 516 = 16 + 15 = 31+41= 51-61=

53-61= 31+21= 1-21= 71+76= 32+61=

3121 4131 5131 21163 751

5153 9195 103107 9132 35 + 15 =

9392 125128 651 3121 8287

764 4183 5154 21109 4132

1-35 = 79 -29 = 78 + 18 = 52-41 = 21- 41 =

107 + 51= 1 - 43 = 21 + 65 = 31 - 91 = 75+21=

125+121= 32+51= 43+41= 1-1322 = 71-141=

710 - 310 = 25 + 35 = 57 + 514 = 34 + 17 = 5251

8385 3121 15153 411 114117 .

. 10121 3195 135+136= 87-81= 51-61=

127-122= 92+98= 158-31= 1-112= 163+1613=

75-21= 43+83= 75+5= 5-43=

四、计算下面各题,能简算的要简算。

521031 83612423 15 + 35 - 45 = 78 - 29 + 18 =

58 + 45 - 38 + 15 ) 715 + 1921 + 221 10- 712 - 512

87-125+61 34-(52+103) 75+41-149 43+63-85

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95+(43+21) 101+83-52 53-(152+31) 6-(43-52)

54 - (81 + 41) 83 + 74 + 85 61+71+51= 61+21-61=

1315 - 16 + 56 25 - 512 - 718 23 + 16 - 512 72 - (72 - 81)

5-94-95 56 + 34 - 13 56 + 49 + 59 12 +(23 -14 )

415121 1278134 51975492 316532

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75722 )2185(85 )2143(92 )4152(109

32+(21-41) 52+31+53 76+118+113 139-(133+2612)

2-61-65= 51+65+54= 1-21-41= )5231(1513

1-45 -15 = 23 +45 +13 = 54+31+51 1511 + 114+154=

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41+31+41+32 79+81+83+75 158-(158+187) 3 - 14 - 13 - 34

45 -14 +13 910 +320 -315 1-712 +34 2728 +﹙1314 -57 ﹚

2017-203-209= 92+83-85= 141+145+143= 41+41+43=

1-32-31= 56 +27 +16 58 +23 +56 4-45 -15

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. 45 -(12 +14 ) 34 -27 +14 +27 2-14 - 13 - 34 0.8+58 +0.2

125 -(121 -21) 54 +(83-41) 2-73-74 21+41-61

85-31+125 1115-83-85 95+127+94 87+43-1211

3–(1921 - 914 ) 6-(43-52) 615231 52+31+53

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. 315243 15410354 )4183(43

1211+85+83+121 97-81+92-83 1561151511116-++

71+92+74+97 169+83+167+81

23 + 45 -(45 - 15 ) 715 + 1115 -(310 + 1115 ) 154 + 97 - 154 + 92

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34 -27 +14 +27 31838532 95619542

136-73+137-72 85121183121 711 + 15 + 411 + 25

16 +57 +56 + 72 5210753++ 528387+- 19419152--

158+31-158 94-52+95-52 98+61-43 43-125+61

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1-61-83 135 + 135 + 135 79 +23 - 49 95+74+94

98+(32-21) 87-125+61 34-(52+103) 21-(43-83)

5-94-95 32+(21-41) 3-(914 + 67 ) 910 -(34 -16 )

314165 15415751 2-75-72= )5243(107

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. 54-103+32 21-(43-83) 65-(21+31) 45 -310 +15

10-(23 +12 ) 45 -16 +13 9510194

32 + 51 -32 + 51= (2017+103)-(2017-107) 2425 -413 -513 -413

1211+85+81+121-274-273

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54-(107-2013)+109-(61+32)

解方程

14 + x = 1112 20951+χ= 8743x

395=χ+

X+35 = 710 X + 53 = 87 12783x

72+x = 2111 x + 34 = 1112 χ+73=43

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8743x 83+X=127 17 + 12 + x = 23 x +( 13 + 34 )=2

X-31=72 2X-51=1- 51 3x-29 =19

x-125 =247 274x 6561x 52158=χ-

x - 316 = 58 7231x 1)5443(x χ-32 = 12 +14

X-31+61=65 4x - 13 =2- 13 3x-14×2 =11

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56 -x=12 651211x 831613x 6598x

4165-χ= 97-x= 274 34 -x= 310 1316 - x= 38

43-X=61 43153x