脱式计算.42÷6÷7 30÷5×6 81÷9+9

脱式计算.42÷6÷7 30÷5×6 81÷9+9.
2025-04-16 18:53:53
推荐回答(1个)
回答1:

(1)42÷6÷7
=7÷7
=1;

(2)30÷5×6  
=6×6
=36;

(3)81÷9+9
=9+9
=18.