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Find the square of following number using diagonal method: $88$.
Given: A number $88$.
To do: To find the square of the number $88$ using the diagonal method.
Solution:
From the above table:
Unit's digit is $\underline{4}$.
Ten's digit$=4+6+4=1\underline{4}$ [$1$ carry]
Hundred's digit$=6+4+6=16+1( carry)=1\underline{7}$
Thousand's digit$=6+1(carry)=\underline{7}$
Thus, the square of the number $88$ is $7744$.
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