Calculate the square of 85 without performing actual multiplication
Answers
Answered by
34
there is a trick of square of no. which end at 5 like 25,35,45,55.... etc.
the trick is
we multiply the first no. with its consecutive no. and then paste 25 after it.
for example,
(25)² =625
2×3=6 and 25 so, 625
now, (85)²=7225
bcoz 8×9=72 and paste 25 so, 7225 answer
☺☺☺
the trick is
we multiply the first no. with its consecutive no. and then paste 25 after it.
for example,
(25)² =625
2×3=6 and 25 so, 625
now, (85)²=7225
bcoz 8×9=72 and paste 25 so, 7225 answer
☺☺☺
Answered by
5
Answer:
the first anwer is correct so give like and vote answer
Similar questions