Easiest way to multiply 34 by 36 is- first multiply 6 by 4 it is 24 . Then increase 3 by 1 it is 4 . Now multiply 3 by 4 it is 12. Combining both it is 1224.The required result.
similarly any two digit numbers having tens digits equal and sum of unit digits =10 their multiplication will be as above.
First multiply unit digits. and write the result then increase tens digit by 1 and multiply both and write combining both we get required result.
for the following you can do practice.
22x28, 37x33; 67x 63, 89x81 ,45x45,19x11, 69x61
65x65 These tricks are very useful.
similarly any two digit numbers having tens digits equal and sum of unit digits =10 their multiplication will be as above.
First multiply unit digits. and write the result then increase tens digit by 1 and multiply both and write combining both we get required result.
for the following you can do practice.
22x28, 37x33; 67x 63, 89x81 ,45x45,19x11, 69x61
65x65 These tricks are very useful.
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