Find out Squares of Number between 100-125
Friends I am
explaining two ways to find out Square of desired number
Method 1 : By applying the formula of (A+B)2 = A2 + 2AB+B2
So let us we find out Square of 107.
Method 1 : By applying the formula of (A+B)2 = A2 + 2AB+B2
So let us we find out Square of 107.
(i) First split it
into 100+7 (here A=100 and B=7)
(ii) Now (100+7)2 = 10000+1400+49
= 11449
Method 2 : This method is much easier than previous one. And you need not to write anything on the paper to find out the square. Just you have to apply some common sense and you can solve it by imagination only
lets take example of 107 again.
107 is 7 more than 100.
(i) first think 107+7=114 followed by square of 7=49
(ii) the answer for 1072 will be 11449 (as above)
Take another example of 1092
= 109+9=118 followed by 92=81
= 11881
but friend be careful for number 110 and above because the square of 10 and above is in 3 digit that is why you have to carry 100 place digit value and add it with the resultant of first step.
for Example lets find out 1122
(i) 112+12 = 124 and 122=144 (Take 1 as carry value and add it with 124)
(ii) than our answer for 1122 will be 12544.
(ii) Now (100+7)2 = 10000+1400+49
= 11449
Method 2 : This method is much easier than previous one. And you need not to write anything on the paper to find out the square. Just you have to apply some common sense and you can solve it by imagination only
lets take example of 107 again.
107 is 7 more than 100.
(i) first think 107+7=114 followed by square of 7=49
(ii) the answer for 1072 will be 11449 (as above)
Take another example of 1092
= 109+9=118 followed by 92=81
= 11881
but friend be careful for number 110 and above because the square of 10 and above is in 3 digit that is why you have to carry 100 place digit value and add it with the resultant of first step.
for Example lets find out 1122
(i) 112+12 = 124 and 122=144 (Take 1 as carry value and add it with 124)
(ii) than our answer for 1122 will be 12544.
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