Question

22·23 is equal to?

400 + 6
440 + 66
460 + 6

Answer 1

The answer is 440+66

Answer 2

22·23 is equal to: 440 + 66

Explanation:

We are asked to find the expression which is equivalent to:

22·23

We know that this expression could also be given by:

`22\cdot 23=(20+2)\cdot (20+3)\\\\i.e.\\\\22\cdot 23=20\cdot 20+20\cdot 3+20\cdot 2+2\cdot 3\\\\i.e.\\\\22\cdot 23=20\cdot 20+20\cdot 2+20\cdot 3+2\cdot 3\\\\i.e.\\\\22\cdot 23=400+40+60+6\\\\i.e.\\\\22\cdot 23=440+66`

It could also be done as follows:

We know that:

`22\cdot 23=506`

and

`440+66=506`

Hence, we get:

`22\cdot 23=440+66`