(316+242)÷9 528÷2×4 932-32×27
702-483÷3 624÷(3×2) 126÷7×47
①(34-18)×87
②205-205÷5
③380+630÷9
④1242÷6÷3
⑤688÷(83-79)
⑥450-156+75
① []
②4.6+7.68﹣1+2.32
③1.25×2.5×0.4×8
④9.5×20%+
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1