1.C
2.A
3.C
630÷42=630÷7÷6
360÷4÷9=360÷(4×9)
Mathematics clinic
1. Wrong
7500÷25×4
=300×4
= 1200
mistake
2448÷ 12÷2
=2448÷( 12×2)
=2448÷24
= 102