Question

1Tính Nhanh

A;  2 x 31 x 12 x 4 + 6x 42+8 x 27x 3

B; 36 x 28 +36 x 82 + 64 x 69 + 64 x 41

Answer 1

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

Answer 2

b) 36 nhan ( 28+82) + 64 nhan ( 69 + 41)

= 36. 110 + 64 . 110

= 110 . ( 36 + 64 )

= 110 .100

=11000