Question

50×0.75-40×4分之3的最简便方法

50×0.75-40×4分之3的最简便方法

Answer 1

=50×0.75-40×0.75
=（50-40）×0.75
=10×0.75
=7.5

Answer 2

50×0.75-40×4分之3 4分之3换成小数就是0.75
=（50-40）X0.75
=10X0.75
=7.5

Answer 3

＝（50-40）X3/4
＝10X3/4
＝7.5