0.4×[(20-0.84)÷0.01]巧算?

2025-05-11 23:09:28
推荐回答(2个)
回答1:

=0.4×(20÷0.01-0.84÷0.01)
=0.4×(2000-84)
=0.4×2000-0.4×84
=800-33.6
=766.4

回答2: