题目内容
【题目】怎样简便怎样算。
(1)0.25×1.7×4×0.3
(2)1.25×0.25×0.4×0.8
【答案】(1)0.51
(2)0.1
【解析】
(1)0.25×1.7×4×0.3
=(0.25×4)×(1.7×0.3)
=1×0.51
=0.51
(2)1.25×0.25×0.4×0.8
=(1.25×0.8)×(0.25×0.4)
=1×0.1
=0.1
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题目内容
【题目】怎样简便怎样算。
(1)0.25×1.7×4×0.3
(2)1.25×0.25×0.4×0.8
【答案】(1)0.51
(2)0.1
【解析】
(1)0.25×1.7×4×0.3
=(0.25×4)×(1.7×0.3)
=1×0.51
=0.51
(2)1.25×0.25×0.4×0.8
=(1.25×0.8)×(0.25×0.4)
=1×0.1
=0.1