Question

奥数1.25✖️0.37➕12.5✖️0.053-1➗8怎么简便方法？

Answer 1

1.25*0.37+12.5*0.053-1÷8
=0.125*3.7+0.125*5.3-0.125
=（3.7+5.3-1）*0.125
=8*0.125
=1

Answer 2

1.25×0.37+12.5×0.053–1÷8
=1.25×0.37+1.25×0.53–0.125
=1.25×(0.37+0.53)–1.25×0.1
=1.25×(0.9-0.1)
=1.25×0.8
=1