9分之4乘2.85+2.85乘9分之5(简算)
问题描述:
9分之4乘2.85+2.85乘9分之5(简算)
答
4/9*2.85+2.85*5/9
=2.85*(4/9+5/9)
=2.85*1
=2.85
答
9分之4乘2.85+2.85乘9分之5
=(4/9+5/9)×2.85
=1×2.85
=2.85
答
4/9×2.85+2.85×5/9
=(4/9+5/9)×2.85
=1×2.85
=2.85