Question

0.75×52.3+2.5×5.23用简便运算计算？

Answer 1

0.75x4.3 2.5x0.43的简便算法，计算过程如下：
=0.75x(0.43x10) 2.5x0.43
=0.75x10x0.43 2.5x0.43
=7.5x0.43 2.5x0.43
=0.43(7.5 2.5)
=0.43x10
=4.3
这道题的答案是4.3。

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Answer 2

=0.75×10×5.23+2.5×5.23
=7.5×5.23+2.5×5.23
=（7.5+2.5）×5.23
=10×5.23
=52.3