4⼀5×1⼀4+1⼀5×3⼀4简便计算

2025-06-22 22:36:11
推荐回答(3个)
回答1:

4/5×1/4+1/5×3/4
=1/4*(4/5+3/5)
=1/4*8/5
=2/5

回答2:

4/5×1/4+1/5×3/4
=1/5×4/4+1/5×3/4
=1/5×(1+3/4)
=1/5×7/4
=7/20

回答3:

1/5*1/4(4+3)=1/20*7=7/20