Question

49 x 62 + 38 x 73 + 31 x 51 x 2 + 19 x 27 x 2

 

Answer 1

Ta có:

49 x 62 + 38 x 73 + 31 x 51 x 2 + 19 x 27 x 2

= 49 x 62 + 38 x 73 + 62 x 51 + 38 x 27

= 62 x ( 49 + 51 ) + 38 x ( 73 + 27 )

= 62 x 100 + 38 x 100

= ( 38 + 62 ) x 100

= 100 x 100

= 10 000

Answer 2

49x62+38x73+31x51x2+19x27x2

= 3038+2774+3162+1026

=10000

k cho mk nha bn!                    :)

Answer 3

tính nhanh thủy ạ

Answer 4

\(=10000nha\)

Answer 5

49 x 62 + 38 x 73 + 31 x 51 x 2 + 19 x 27 x 2

= 3038 + 38 x 73 + 31 x 51 x 2 + 19 x 27 x 2

= 3038 + 2774 + 31 x 51 x 2 + 19 x 27 x 2

= 3038 + 2774 + 3162 + 19 x 27 x 2

= 3038 + 2774 + 3162 + 1026

= ( 3038 + 3162 ) + ( 2774 + 1026 )

= 6200 + 3800

= 10000