问题 计算题
用你喜欢的方法计算。
(1)8.8×1.25(2)57.3+(14.1-6.3)(3)0.53×9+0.53
(4)21.23-4.78-15.22(5)0.747×8.2-7.47×0.72
答案

(1)8.8×1.25

 =8×1.25×1.1

 =11(2)57.3+(14.1-6.3)

 =57.3+7.8

 =65.1(3)0.53×9+0.53

 =0.53×10

 =5.3

(4)21.23-4.78-15.22

 =21.23-20

 =1.23(5)0.747×8.2-7.47×0.72

 =7.47×(0.82-0.72)

 =0.747

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