6.7×9.9+0.67×2用简便方法计算
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解决时间 2021-01-30 12:01
- 提问者网友:欺烟
- 2021-01-30 05:46
6.7×9.9+0.67×2用简便方法计算
最佳答案
- 五星知识达人网友:佘樂
- 2021-01-30 06:50
6.7×9.9+0.67×2
=6.7×9.9+6.7×0.2
=6.7×(9.9+0.2)
=6.7×10.1
=6.7×(10+0.1)
=6.7×10+6.7×0.1
=67+0.67
=67.67
=6.7×9.9+6.7×0.2
=6.7×(9.9+0.2)
=6.7×10.1
=6.7×(10+0.1)
=6.7×10+6.7×0.1
=67+0.67
=67.67
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