Question

4.69×2.32+53.1×0.232简便运算？

Answer 1

4.69×2.32+53.1×0.232
=（4.69+5.31）×2.32
=10×2.32
=23.2
观察相同的数字，2.32是0.232的十倍数，那么把0.232放大十倍，53.1缩小十倍相乘结果是一样的，就可以得到相同的点，进行简单的运算

Answer 2

原式=4.69x2.32+5.31x10x0.232
=4.69x2.32+5.31x2.32
=2.32x（4.69+5.31）
=2.32x10
=23.2

Answer 3

原式＝4.69*2.32+5.31*10*0.232
=4.69*2.32+5.31*2.32
=（4.69+5.31）*2.32
=10*2.32
=23.2