630霧42的简便运算

2025-02-03 08:50:33
推荐回答(4个)
回答1:

630➗42
=630÷(7×6)
=630÷7÷6
=90÷6
=15

回答2:

=7*9*10÷(7*6)
=(7÷7)×(9÷6)×10
=1x1.5×10
=15

回答3:

630÷42
=(630÷21)÷(42÷21)
=30÷2
=15

回答4:

15