0.625x24+6.25x7.6巧算？

Question

如题所述

Answer 1

原式=6.25×2.4+6.25×7.6
=6.25×(2.4+7.6)
=62.5
希望能帮到你

Answer 2

0.625x24+6.25x7.6巧算
=0.625x24+0.625x76
=0.625x(24+76)
=0.625x100
=62.5

Answer 3

6.25×2.4+6.25×7.6
=6.25×（2.4+7.6）
=6.25×10
=62.5
这题的答案是62.5。

Answer 4

0.625×24+6.25×7.6
=6.25×2.4+6.25×7.6
=6.25×(2.4+7.6)
=6.25×10
=62.5
这道题主要是观察式子的特征，中间加法两端乘法考虑乘法分配律，由于没有相同的因数，所以要看能不能通过式子的变形转换为相同数，这道题也可以将后面乘法6.25缩小10倍变为0.625,因数7.6就相应的扩大10倍，变为76