问题 填空题

根据运算律填空.

3.6×0.75=0.75×______;

0.25×3.2=0.25×______×______;

7.6×10.1=7.6×______+7.6×______;

6.3×0.87+3.7×0.87=(______+______)×0.87.

答案

(1)3.6×0.75=0.75×3.6;

(2)0.25×3.2=0.25×(4×0.8)=(0.25×4)×0.8;

(3)7.6×10.1=7.6×(10+0.1)=7.6×10+7.6×0.1;

(4)6.3×0.87+3.7×0.87=(6.3+3.7)×0.87.

故答案为:3.6,4,0.8,10,0.1,6.3,3.7.

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