简便计算五年级易错.doc

2.5×44 3.6-3.6×0.5 0.5×1.02 6.66×3.3+6.66×6.7

2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9 7.28×99+7.28

3.6×0.8+0.8×6.4 12.7×10.8-2.7×10.8 9.83×1.5+6.17×1.5

101×0.41-0.41 0.67×8.3+2.7×0.67—0.67 4.33×12.5×8

12.56-（2.56+3.2） 125×10+8 125×（10+8）

4.8×7.8+78×0.52 1.87×9.9+0.187 3.14×0.68+31.4×0.032

12.7×9.9+1.27 3.65×4.7-36.5×0.37 101×0.87-0.91×87

36÷1.5÷4 36.5-（16.5-2） 36.5-（16.5+2）

3.29+0.73+2.27         3.29-0.73-2.27        7.5+2.5-7.5+2.5

7.325-3.29-3.325        7.325-(5.325+1.7)         7.325-(5.325-1.7)

3.29+0.73-2.29+2.27     3.29×0.25×4              0.125×8.8    

0.25×0.28               0.125×3.2×2.5             35×40.2  

0.25×4÷0.25×4        3.5×9.9                   3.5×99+3.5

3.5×101-3.5            3.5×9.9+3.5×0.1           3.5×2.7+35×0.73

3.5×2.7-3.5×0.7      (32+5.6)÷0.8              3.5÷0.6-0.5÷0.6

4.9÷3.5              7÷0.25÷4                  7÷0.125   

7.35÷(7.35×0.25)   7.35÷(7.35÷0.25) 

3.07－0.38－1.62        1.29＋3.7＋2.71＋6.3         8－2.45－1.55

3.25＋1.79－0.59＋1.75       23.4－0.8－13.4－7.2        0.32×403

3.2＋0.36＋4.8＋1.64         1.23＋3.4－0.23＋6.6         0.25×36

12.7－（3.7＋0.84）          36.54－1.76－4.54        0.25×0.73×4

7.6×0.8＋0.2×7.6             0.85×199              0.25×8.5×4 

1.28×8.6＋0.72×8.6          12.5×0.96×0.8          10.4－9.6×0.35

0.8×（4.3×1.25）            3.12＋3.12×99           28.6×101－28.6