Question

1.3×0.25—0.5X0.25—0.2÷4该怎样简便？

可以帮忙吗

Answer 1

1.3×0.25－0.5×0.25-0.2÷4
=(1.3-0.5)×0.25-0.05
=0.8×0.25-0.05
=0.25×4×0.2-0.05
=0.2-0.05
=0.15

Answer 2

1.3×0.25-0.5×0.25-0.2÷4
=1.3×1/4-0.5×1/4-0.2×1/4
=（1.3-0.5-0.2）×1/4
=0.6×1/4
=0.15