Question

52.5×2.9+5.25用简便方法

Answer 1

本题先把52.5转化成5.25×10，然后根据乘法分配律，可以使计算简便，原式=5.25×10×2.9+5.25=5.25×（29+1）=5.25×30=157.5，希望对你有帮助。

Answer 2

52.5×2.9+5.25
=52.5×2.9+52.5×0.1
=52.5×(2.9+0.1)
=52.5×3
=157.5