Question

Tính thuận tiện : 36.12 + 12.65 - 12

Answer 1

\(36\cdot12+12\cdot65-12\)

\(=12\cdot\left(36+65-1\right)\)

\(=12\cdot\left(35+65\right)\)

\(=12\cdot100\)

\(=1200\)

Answer 2

36.12+12.65-12=36.12+12.65-12.1=(36+65-1).12=100.12=1200