4.5×3.6-78的简算方式?
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发布时间:2023-12-02 20:07
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热心网友
时间:2024-12-07 10:39
你好!同学!简便算法过程如下
4.5×3.6-78
=(4+0.5)×(3+0.6)-78
=4×3+4×0.6+0.5×3+0.5×0.6-78
=12+2.4+1.5+0.3-78
=12+(2.4+1.5+0.3)-78
=12+4.2-78
=16.2-78
=-61.8
热心网友
时间:2024-12-07 10:40
4.5×3.6-78的简算方法是直接按运算顺序算,先算4.5x3.6=16.2,再算16.2-78=-61.8。
算式: 4.5×3.6-78
=16.3-78
=-61.8。
热心网友
时间:2024-12-07 10:40
=5×0.9×6×0.6-78
=(5×6)×(0.9×0.6)-78
=30×0.54-78
=16.2-78
=-61.8
热心网友
时间:2024-12-07 10:41
4.5x3.6-78
=4.5x2x1.8-3x26
=9x1.8-3x26
=3x3x1.8-3x26
=3x(5.4-26)
=3x(-20.6)
=-61.8