how to find square and square root by division method 7921
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____
8/7921\89
-64__
169/1521
-1521__
0
First pair the numbers __. __
79&21
Then find the square closest and less than the first pair and write it
(Here 8 sq=64 less than 79)
Subtract the number and collect the no.s 1521
The double the last quotient and and write it as the new quotient for 1521
Then choose the last digit of the quotient according to the last digit of the no (Here 1 so the square root can have digit either 1 or 9)
Check the product before writing(if 161 then 161×1;but if 169 then 169×9)here 169
Thus 89 is the √7921
____
8/7921\89
-64__
169/1521
-1521__
0
First pair the numbers __. __
79&21
Then find the square closest and less than the first pair and write it
(Here 8 sq=64 less than 79)
Subtract the number and collect the no.s 1521
The double the last quotient and and write it as the new quotient for 1521
Then choose the last digit of the quotient according to the last digit of the no (Here 1 so the square root can have digit either 1 or 9)
Check the product before writing(if 161 then 161×1;but if 169 then 169×9)here 169
Thus 89 is the √7921
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