用简便计算。2.25乘以0.9除以2.25乘0.9

2025-04-15 11:21:04
推荐回答(3个)
回答1:

2.25乘以0.9除以2.25乘0.9
=0.9x(2.25÷2.25)x0.9
=0.9x1x0.9
=0.81

回答2:


见图

回答3:

解:原式=2.25÷2.25×0.9×0.9
=0.9×0.9
=0.81