9.8×8.5简便计算4.63乘3.8+3点37+6点二简便计算0.125乘13.7×0点4
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解决时间 2021-03-26 08:31
- 提问者网友：战皆罪
- 2021-03-26 03:28
9.8×8.5简便计算4.63乘3.8+3点37+6点二简便计算0.125乘13.7×0点4
最佳答案
- 五星知识达人网友：痴妹与他
- 2021-03-26 04:49
简便计算
9.8×8.5
=10×8.5-0.2×8.5
=85-1.7
=83.3
4.63×3.8+3.37×6.2
=1.26×3.8+3.37×3.8+3.37×6.2
=4.788+3.37×（3.8+6.2）
=4.788+3.37×10
=4.788+33.7
=38.488
0.125×13.7×0.4
=（0.125×0.4）×13.7
=0.05×13.7
=0.665
9.8×8.5
=10×8.5-0.2×8.5
=85-1.7
=83.3
4.63×3.8+3.37×6.2
=1.26×3.8+3.37×3.8+3.37×6.2
=4.788+3.37×（3.8+6.2）
=4.788+3.37×10
=4.788+33.7
=38.488
0.125×13.7×0.4
=（0.125×0.4）×13.7
=0.05×13.7
=0.665
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