Question

7÷5*(5/7+5/28)用简便方法计算怎么算

Answer 1

=1.5 0.51÷17＝0.03, 32.8＋19＝51.8,6.286+198 7.314-202l用简便的方法计算下面各题2.9*6.7+2.3+2.9 6.72*102-672*0.02

Answer 2

7÷5*(5/7+5/28)
=7/5*5/7+7/5*5/28
=1+1/4
=5/4

Answer 3

2.9*6.7+2.3+2.9 6.72*102-672*0.02