Question

36x52十72X24的简便方法怎么算？

Answer 1

注意到 72 = 36 × 2

所以 36×52+72×24 = 36×(52+48) = 3600
总结: 这种乘法夹加法的式子若有简便运算, 则一般是 "拆", 考虑倍数, 通过乘法结合律快速运算

Answer 2

36×52+72×24
=36×52+36×2×24
=36×（52+2×24）
=36×100
=3600

Answer 3

=1872+1728=3600