2.31.12+4.6.42+8.27.3

= (2.12).31+(4.6).42+(8.3).27

= 24.31+24.42+24.27

= 24.(31+42+27)

 = 24.100

= 2400

_HT_

2.31.12+4.6.42+8.27.3 = 24x31+24x42+24x27=24x(31+42+27)=24x100=2400 nha Dương Ngọc Phuong Linh

2.31.12 + 4.6.42 + 8.27.3

= ( 2.12). 31 + ( 4. 6).42 + (8.3). 27

= 24.31 + 24.42 + 24.27

= 24.(31 + 42 + 27) = 24.100 = 2400

  2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3

= 744 + 24 + 648

=  1416

NẾU ĐÚNG THÌ K CHO MK NHA !!!

MK KO CHẮC ĐÚNG VÌ MK MỚI LỚP 5

=744+1008+648=2400

2.12=24

4.6 =24

8.3 = 24

=24(31+42+27) = 24.100 = 2400

  2.31.12+4.6.42+8.27.3

=(2.12).31+(4.6).42+(8.3).27

=24.31+24.42+24.27

=24.(31+42+27)

=24.   100

=2 400

2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 .3

= (2 . 12) . 31 + (4 . 6) . 42 + (8 . 3) . 27

= 24 . 31 + 24 . 42 + 24 . 27

= 24 . (31 + 42 + 27)

= 24 . 100

= 2400

=(24.31)+(24.42)+(24.27)

=24.(31+42+27)

=24.100

=2400

2.31.12+4.6.42+8.27.3

=24.31+24.42+24.27

=24.(31+42+27)

=24.100

=2400

    \(2.31.12+4.6.42+8.27.3\) 

\(=\left(2.12\right).31+\left(4.6\right).42+\left(8.3\right).27\)

\(=24.31+24.42+24.27\)

\(=24.\left(31+42+27\right)\)

\(=24.100=2400\)

k nha

( 2 x 12 ) x 31 + ( 4 x 6 ) x 42 + ( 8 x 3 ) x 27

=( 31 + 42 +27 ) x 24

=100 x 24

= 2400

 2.31.12 + 4.6.42 + 8.27.3

= ( 2.12) .31 + ( 4.6) . 42 + ( 8.3) 27

= 24.31 + 24.42 + 24.27

= 24. (31 + 42 + 27)

= 24. 100

= 2400

a) kết quả là:2400

b)Kết quả là: 11000

Đáp số: 11000

a) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3

  = 24 x 31 + 24 x 42 + 24 x 27

  = 744 + 1008 + 648

  = 2400

b) 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41

    = 36 x (28 + 82) + 64 x (69 + 41)

    = 36 x 110 + 64 x 110

    = (36 + 64) x 110

     = 100 x 110

     = 11000