Question

(4/7×6/11×7/8)÷(2/7×3/11×7/16)怎样计算简便

Answer 1

将除号改成乘号,并将后面括号内的分数写成它们的倒数计算较为简便.
(4/7×6/11×7/8)÷(2/7×3/11×7/16)
=4/7×6/11×7/8×7/2×11/3×16/7
=(4/7×7/2)×(6/11×11/3)×(7/8×16/7)
=2×2×2
=8