Question

Tính hợp lý:

136 . 68 + 16 . 272

Answer 1

\(136\cdot68+16\cdot272\)

\(=136\cdot68+32\cdot136\)

\(=136\cdot\left(68+32\right)\)

\(=136\cdot100\)

\(=13600\)

Answer 2

`@` `\text {Ans}`

`\downarrow`

`136 * 68 + 16 * 272`

`= 136*68 + 16*68*4`

`= 68*(136 + 16*4)`

`= 68*(136+64)`

`= 68*200`

`=13600`