14-14×0.15-0.15怎样简便运算?
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发布时间:2022-10-12 23:36
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热心网友
时间:2023-10-12 20:44
=14-(10+4)0.15-0.15
=14-(10×0.15+4×0.15)-0.15
=14-(1.5+0.6)-0.15
=14-2.1-0.15
=14-2.25
=11.75
热心网友
时间:2023-10-12 20:44
14-14×0.15-0.15
=14×(1-0.15)-0.15
=14×0.85-0.15
=7×2×0.85-0.15
=7×1.7-0.15
=11.9-0.15
=11.75