Squaring near 50 & 100.

SQUARING NUMBERS NEAR 50 AND 100.

Only 3 steps:

you can do this 2 seconds.

STEP 1:

To find the answer of "47 ² "

First think how much this is closer to 50

In this case , answer is "- 3" 

Then,

subtract this 3 with 25(i.e,"22") being the first part answer.

STEP2:

This will be the first part  answer.

STEP 3:

In our question "43² " square the unit digit 3 which is 9 is the second part answer. 

Only one condition is second part answer must be two digit. so write 9 as 09 .that 's it.  you got the answer. "2209"

Note:

Take another example 57 x 57 =?

Here ,57=(50 +7) , So add 7 with 25. then square the number "7"

So, the Answer  "3249"

Try this :

    52 x 52 =?

    58 x 58 =?

 

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