A-A+
口算.240-200=______360+50=______710-80=______360
问题详情
240-200=______
参考答案
240-200=40360+50=410710-80=630360÷4=90(31+40)×3=213630÷3=21090÷9=10260-60=200230×3=690(64-8)÷8=773×2=14619×3=57140×5=70080÷2=40(73-13)×7=420.故答案为:40,410,630,90,213,210,10,200,690,7,146,57,700,40,420.
考点:口算