This method is used to find square of the numbers in 50s i.e. numbers from 51 to 59.
You can find square of these numbers in three simple steps.
Step 1: Add 25 to the unit’s digit.
Step 2: Square the unit’s digit.
Step 3: Write the answers of step 1 and step 2 together or side by side.
Let’s take an example.
Square of 56
Step 1: Add 25 to the unit’s digit
6 + 25 = 31
Step 2: Square the unit’s digit
62 = 36
Step 3: Write the answers of step 1 and step 2 together.
Answer = 3136
Square of 59
Step 1: Add 25 to the unit’s digit
9 + 25 = 34
Step 2: Square the unit’s digit
92 = 81
Step 3: Write the answers of step 1 and step 2 together.
Answer = 3481
Square of 53.
Step 1: Add 25 to the unit’s digit.
3 + 25 = 28
Step 2: Square the unit’s digit.
32 = 9
Step 3: Write answers of step 1 and step 2 together.
Answer: 2809
(NOTE: Whenever square of unit’s digit is on only single digit then we are adding 0 before it.)
Square of 52
Step 1: Add 25 to the unit’s digit
2 + 25 = 27
Step 2: Square the unit’s digit
22 = 4
Step 3: Write the answers of step 1 and step 2 together.
Answer = 2704
(NOTE: Whenever square of unit’s digit is on only single digit then we are adding 0 before it.)
