Question

12 x53+53x16 +28 x47

78 x 31+78 x24+78 x 17 +22x 72

32 x 125 x 3

              các  bạn giúp mik nhanh nhất có thể nha

Answer 1

78x31+78x24+78x17+22x72

=>78x(31+24+17)+22x72

=>78x72+22x72

=>72x(78+22)

=>72x100

=>7200

t nha

Answer 2

12 . 53 + 53 . 16 + 28 . 47

= 53 . ( 12 + 16 ) + 28 . 47

= 53 . 28 + 28 .47

= ( 53 + 47 ) . 48

= 100 . 48

= 4800

78 . 31 . 78 . 24 + 78 . 17 + 22 . 72

= 78 . ( 31 + 24 + 17 ) + 22 . 72

= 78 . 72 + 22 . 72

= ( 78 + 22 ) . 72

= 100 . 72

= 7200

32 x 125 x 3

= 8 . 4 + 125 . 3

= ( 125 . 8 ) . ( 4 . 3 )

= 1000 . 12

= 12000

Answer 3

=53x(12+16)+28x47

=53x28+28x47

=28x(53+47)

=28x100

=2800

=78x(31+24+17)+22x72

=78x72+22x72

=72x(78+22)

=72x100

=7200

=4000x3

=12000

Mk ko viết lại đề bn ak!

Answer 4

12x53+53x16+28x47

=> 53x(12+16)+28x47

=>53x28+28x47

=>27x( 53+47)

=>27x100

=>2700

Answer 5

a)\(=53\times\left(12+16\right)+28\times47=53\times28+28\times47=28\times\left(53+47\right)=28\times100=2800\)

1 bài trước nè

Answer 6

32x125x3

=>32x(100+25)x3

=>(3200+800)x3

=>4000x3

=>12000

t nke

Answer 7

12 . 53 + 53 . 16 + 28 . 47

= 53 . ( 12 + 16 ) + 28 . 47

= 53 . 28 + 28 .47

= ( 53 + 47 ) . 48

= 100 . 48

= 4800

78 . 31 . 78 . 24 + 78 . 17 + 22 . 72

= 78 . ( 31 + 24 + 17 ) + 22 . 72

= 78 . 72 + 22 . 72

= ( 78 + 22 ) . 72

= 100 . 72

= 7200

32 x 125 x 3

= 8 . 4 + 125 . 3

= ( 125 . 8 ) . ( 4 . 3 )

= 1000 . 12

= 12000

Answer 8

đúg k z,cô giáo chữa chưa

Answer 9

12 . 53 + 53 . 16 + 28 . 47

= 53 . ( 12 + 16 ) + 28 . 47

= 53 . 28 + 28 .47

= ( 53 + 47 ) . 48

= 100 . 48

= 4800

78 . 31 . 78 . 24 + 78 . 17 + 22 . 72

= 78 . ( 31 + 24 + 17 ) + 22 . 72

= 78 . 72 + 22 . 72

= ( 78 + 22 ) . 72

= 100 . 72

= 7200

32 x 125 x 3

= 8 . 4 + 125 . 3

= ( 125 . 8 ) . ( 4 . 3 )

= 1000 . 12

= 12000