用脱式计算,要注意运算顺序哦! 45+35×12 400-12×23 (42-12)÷6

用脱式计算,要注意运算顺序哦! 45+35×12 400-12×23 (42-12)÷6.
2025-01-06 11:16:41
推荐回答(1个)
回答1:

(1)45+35×12,
=45+420,
=465;

(2)400-12×23,
=400-276,
=124;

(3)(42-12)÷6,
=30÷6,
=5.