①125+75÷5
② ÷7+ ×
③18.86﹣5.29﹣4.71+1.14
④0.25×32×12.5
⑤ ÷[( + )× ]
⑥15×( + )×17
+ = 1- = 1.25× = - =
0.9+99×0.9= 0÷ = 1÷ = -0.5=
0.6×101= 3.2×2.5×12.5=
1.6×0.5=
0.8+2.2=
23=
+ =
× =
16÷ =
①5.8﹣1.9﹣2.1
②×2.5××4
③÷(﹣)×
④83×0.75+17÷