25乘(56加72)乘125怎么巧算_数学解答

25乘(56加72)乘125怎么巧算

人气：398 ℃　时间：2020-04-11 15:22:31

解答

25x(56+72)x125
=25x128x125
=25x4x4x8x125
=(25x4)x4x(8x125)
=100x4x1000
=400x1000
=400000