What is 33 * 14 =3314= ?

enter image source here

1 Answer
Mar 6, 2018

462462

Explanation:

33 *14 = 33 xx143314=33×14

You can multiply using normal long multiplication:

" " 33 33
"xxul14
" "132
" "ul330
" "462

Or you can do it by mental arithmetic and play around with the numbers and their factors.

33 xx 14 = 3xx11xx2xx7

Re-arrange the numbers. Multiplication by 2 is easy - do it last.

" "3xx7xx11 " "xx2
=21xx11" "xx2
=231 xx2" "rarr see below for a quick method
=462

Or another option:

" "3xx2xx7" "xx11
= 42" " xx11
= 462

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
There is a very useful short cut for multiplying by 11

35 xx 11 = 3" "5" "larr open the 35

Add the 35" "larr 3+5=8

Write 8 in the space" "rarr 385" "Voila!!

43 xx 11 = 473

If the sum is more than 10, write down the unit value and 'carry' the 1 as usual

48 xx 11:" "rarr 4+8 = 12

4^1 28" "rarr 528