9.14×1.25-1.14÷0.8怎么简便算?(我知道答案,
问题描述:
9.14×1.25-1.14÷0.8怎么简便算?(我知道答案,
答
9.14×1.25-1.14÷0.8
=9.14×5/4-1.14÷4/5
=9.14×5/4-1.14×5/4
=5/4×(9.14-1.14)
=5/4×8
=10
答
9.14×1.25-1.14÷0.8
=9.14×1.25-1.14×1.25
=(9.14-1.14)×1.25
=8×1.25
=10