题目内容
【题目】用简便方法计算。
0.99×99+0.9953.28×97+53.28×2+53.281.25×0.96×0.8
【答案】99 5328 0.96
【解析】试题分析:(1)先算乘法,再算加法;
(2)先算乘法,再算加法;
(3)运用乘法交换律
解:0.99×99+0.99
=0.99×(99+1)
=0.99×100
=99
53.28×97+53.28×2+53.28
=53.28×(97+2+1)
=53.28×100
=5328
1.25×0.96×0.8
=1.25×0.8×0.96
=1×0.96
=0.96
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