630➗42的简便运算

Question

如题所述

Answer 1

630➗42
=630÷（7×6）
=630÷7÷6
=90÷6
=15本回答被网友采纳

Answer 2

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

Answer 3

630÷42
=(630÷21)÷(42÷21)
=30÷2
=15

Answer 4

15