300道异分母分数加减法计算题

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21+31= 21-41= 52-51= 74-71= 87-83

= 101+ 52= 65-32= 31+51= 83-41= 32+3

1

125-125= 109-101= 54-52= 61+ 31= 2

1-81=

83+83= 21-51= 74+73= 1-87= 65+65=

1-125= 53+21= 109-103= 75-7

5= 83+85=

61+127= 41+43= 73+21= 109-21= 109-53=

59 +89 = 18 +78 = 1924 -1324 = 1936 +336 = 37 +4

7 = 118 -18 = 14 -19 = 1213 -313 = += -=

89 +411 +19 = 1-16 -16 = 34 +14 +14 = 78 -38 +3

8 = += -= += -=

=+7383

=+3

197

58 -310 +14 = 1-124 +548 = 35 +23 +16 = 57 -415 = 27 -2

15 = 34 -﹙34 -23 ﹚= 2-18 -78 = 38 +34 = 45 -14 +13 = 1-712 +34 =

910 +320 -315 = 2728 +﹙1314 -57 ﹚= 56 -﹙23 -712 )= 14 +12 +56 56 -﹙13 +1

2 ﹚=

81+152+87 65+43-31 = 1112 - ( 16 + 18 ) = 712 - ( 34 - 12 )= 54+3

2=

12 -(34 -38 )= 43+75+21 = 54+32+51 = 175-514+32 = 1-1817-181 = 1-1817-181 = 10

7-(73-103)= 1211+1615+158

= 512 +34 +112 = 710 -38 -18 =

81+152+87 = 65+43-31

= 1112 - ( 16 + 18 )=

712 - ( 34 - 12 ) 12 -(34 -38

)= 56 -(13 +3

10 )=

23 +56 - 16 = 59 +45 +49 = =+-415132 =-+51

7352

=-5132 =+4351 =-8172 =+6185 =-3143 =-2153 =-4194 =+3153 =-7197 5

132-

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