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2.4×105 36.79×99+36.79 简便计算
人气:237 ℃ 时间:2020-03-24 16:44:50
解答
2.4×105
= 2.4x100+2.4x5
=240+12
=252
36.79×99+36.79
= 36.79x(99+1)
=36.79x100
=3679
.
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