*24 x 5 + 24 x 3 + 24 x 2
= 24 x ( 5 + 3 + 2 )
= 24 x 10
= 240
*217 x 45 + 50 x 217 + 217 x 5
=217 x ( 45 + 50 + 5 )
=217 x 100
= 21700
Chúc bạn học thật tốt nha
24x5+24x3+24x2
=24x(5+3+2)
=24x10
=240
217x45+50x217+217x5
=217x(45+50+5)
=217x100
=21700
24x(5+3+2)=24x10=240
217x(45+50+5)=217x100=21700
*24x5+24x3+24x2= 24x(5+2+3)=24x10=240
*217x45+50x217+217x5= 217x(45+50+5)= 217x100=21700
Bài 1 : Tính nhanh
* 24 x 5 + 24 x 3 + 24 x 2
= 24 x ( 3 + 2 )
= 24 x 5
= 120
* 217 x 45 + 50 x 217 + 217 x 5
= 217 x ( 45 + 50+ 5 )
= 217 x 100
= 21700