3.5X4.9 35X0.3 0.35X21简便计算

2025-03-20 10:01:08
推荐回答(1个)
回答1:

3.5X4.9+35X0.3+0.35X21
=3.5X4.9+3.5X3+3.5X2.1
=3.5X(4.9+3+2.1)
=3.5X10
=35
愿对你有所帮助!