(250-40)÷7÷3= 761-93+5×740= (912÷76+109)×16= (40+335)÷25÷3= 420÷(166×3-414)= 1804÷(58-47)+898= 283+97×3+132= 1575÷(60+15)+144= (207-25)×23+506=. 答案 参考答案: (169-35)÷2+771=838 949-630÷(112÷16)=859 476÷2÷...