Question

25乘38括号乘4乘5用简便运算怎样算

25乘38括号乘4乘5用简便运算怎样算

Answer 1

原式
=25x(38x4x5)
=(25x4)x(38x5)
=100x（19x2x5)
=100x19x10
=19000

供参考。