① ②
③ ④
46÷ 6.8-3.9×+2.8 ÷4+
0.375×5.8+×3.2- (15-14×)×
①5.8﹣1.9﹣2.1
②×2.5××4
③÷(﹣)×
④83×0.75+17÷
①
②7.5×8×12.5
③
④193﹣16﹣84
①25×32×1.25
②(+0.375)÷(×)
③×+÷7
④6﹣(+)