答得好给高分:1⼀4*2⼀5+3÷4*2⼀5怎么样简算? (四分之一×五分之二加三除以四×五分之二)

2025-01-04 02:27:50
推荐回答(2个)
回答1:

1/4*2/5+3÷4*2/5
=1/4×2/5+3×1/4×2/5
=1/4×2/5×(1+3)
=1/4×2/5×4
=2/5

回答2:

=(1/4+3÷4)×2/5
=(1/4+3/4)×2/5
=1×2/5
=2/5