①×÷
②÷6+×
③(+)÷
①75%×+×75% ②7×(×) ③(+)÷×
①12.5×(8+0.8)
②+×
③+÷
④26﹣7.28﹣12.72
⑤5.8×4.1+5.9×5.8
⑥÷(+1.4×)
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1