IBPS PO Numerical Ability Tricks

I want to crack the IBPS PO exam and for it I have to increase my speed to solve the questions. Can you please give me some ticks to solve the IBPS PO Numerical Ability questions? So also give me some tips to increase my speed for questions?

[sumit]

Numerical Ability – Shortcut Tricks to find the Square of Numbers:

• Square of a number is the product obtained by multiplying a number by itself
2×2 = 4
11×11 = 121
• To find the square of two-digit numbers (10-99) we can consider the following steps
1) Let the 2-digit number be = AB
2) Now to find AB2
3) Unit digit of square = B2
4) Ten’s digit of square = 2×A×B (+ Carry if any from the previous step)
5) The rest of the digits of square = A2 (+ Carry if any from the previous step)

FOR EXAMPLE
672 = ?
AB2 = 672

STEP 1:
B2 = 72 = 4 9 Here “9” is the unit digit and “4” is carry
• 672 = _ _ _ 9


STEP 2:
[2×A×B] + Carry from previous step i.e., 4
2×A×B = 2×6×7 = 84
Add Carry ‘4’ with the above ‘84’ we get [84+4= 88] Therefore at the end of the 2nd Step
From Step 1, here “8” is the unit digit and “8” is carry
• 672 = _ _ 8 9


STEP 3:
A2 = 62 = 36
There is a carry of ‘8’ from the previous step
Therefore, [36+8] = 44
The final answer is 672 = 4 4 8 9