22·23 is equal to: 440 + 66
We are asked to find the expression which is equivalent to:
22·23
We know that this expression could also be given by:
[tex]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[/tex]
It could also be done as follows:
We know that:
[tex]22\cdot 23=506[/tex]
and
[tex]440+66=506[/tex]
Hence, we get:
[tex]22\cdot 23=440+66[/tex]
