4.5×(0.1+2⼀15-2⼀9)(简便计算)

2025-04-09 08:06:09
推荐回答(3个)
回答1:

回答2:

=(9/2)*(1/10)+(9/2)*(2/15)-(9/2)*(2/9)
=9/20+3/5-1
=1/20

回答3:

计算器一按。