Speed Maths | Learn Speed Maths | Mental Maths | Maths Tricks

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Square of a number ends with 5.

• Speed Maths by Mdfaisal.com

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Friends! This technique will help you in
calculating squares of those numbers which ends
with 5.

• Like 25, 35, 45, 65, 85, 105, 125, 225 etc.

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• Lets take for example

(35)2
25
12
Step 1 First do the square of 5, ie. 25.
Step 2 Now, multiply the number which is at
tens place by its next number. So, n x (n1),
i.e. 3 X 4 12.
Step 3 So, our final answer become 1225.
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• Similarly

(55)2
25
30
Step 1 First do the square of 5, ie. 25.
Step 2 Now, multiply the number which is at
tens place by its next number. So, n x (n1),
i.e 5 X 6 30.
Step 3 So, our final answer become 3025.
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