Question

Cho biết 37 . 3 = 111. Hãy tính nhanh 37 . 12

Answer 1

Ta có :

\(37.12\)

\(=37.\left(3.4\right)\)

\(=\left(37.3\right).4\)

\(=111.4\)

\(=444\)

Answer 2

37 . 12 = 37 . 3 . 4 = 111 . 4 = 444

Answer 3

 37 . 12 = 37 . 3 . 4

             = (37 . 3) . 4

             = 111 . 4

             = 444

Answer 4

 37 . 12 = 37 . 3 . 4 = 111 . 4 = 444

Answer 5

37 . 3 = 111

37 . 12 = 37 . 3 . 4

37 . 12 = 111 . 4

37 . 12 = 444

Answer 6

37.12 = 444

Answer 7

\(37\cdot3=111\)

\(\Leftrightarrow37\cdot3\cdot4=111\cdot4\)

\(\Leftrightarrow37\cdot12=444\)