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简便运算:3.6×157/5+3.14×64
人气:193 ℃ 时间:2020-05-21 17:22:56
解答
3.6×157/5+3.14×64
=3.6×31.4+3.14×64
=36×3.14+3.14×64
=3.14×(36+64)
=3.14×100
=314
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