3道简便计算

2025-04-16 02:16:00
推荐回答(1个)
回答1:

9分之2×0.375÷4分之1
=2/9×(3/8×4)
=2/9×3/2
=1/3

(6分之5-3分之2)×10分之9
=5/6×9/10-2/3×9/10
=3/4-3/5
=3/20

[1-(4分之1+8分之3)]÷4分之1
=[1-5/8]×4
=4-5/8×4
=4-2.5
=1.5