While giving the exams of any subject based on Mathematics, the biggest challenge before every student is the calculation. Here, whether we talk about entrance exams or competitive exams for the job, the calculation skills of the student should be very good. Due to the long calculations, the student takes so much time to solve one question.
If some tricks and shortcuts are used while calculating, then it will take a few minutes to solve a long time-consuming question and you will also save time.
Here in this article today, we will tell you about such special tricks, with the help of which you will be able to find square of any number in a few seconds.
These tricks are as follows:
Now we have to find the square of these given two digits numbers.
i> (73)² =?
-:Trick:-
7² =49
3² =09 (we have to write two digits)
Now multiply the given two digits numbers and power.
7 × 3 × 2 =42
Now write and add the above numbers
4909
+ 42 (always write from tens place)
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5329 Ans✓✓
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ii> (89)² = ?
8² = 64
9² = 81
Now multiply the given two digits numbers and power.
8 × 9 ×2 =144
Now write and add the above numbers
6481
+ 144 (always write from tens place)
--------------
7921 Ans ✓✓
---------------
iii> (93)² = ?
9² = 81
3² = 09
Now multiply the given two digits numbers and power.
9 × 3 ×2 = 54
Now write and add the above numbers
8109
+ 54 (always write from tens place)
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8649 Ans✓✓
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