Square of any Digit Ending with 5 (Shortcut Tricks)

Square of any Digit

In our previous post, we have discussed the shortcut trick,  to find the square of two-digit numbers from 1 to 11. Now we are going to discuss another shortcut trick to find the square of any digit ending with 5.

Square of any Digit Ending with 5

Basically in Competitive Exams, if we find any question  to find the square of numbers ending with 5 (25, 45, 65, 85, 135… etc) then we simply do it in two ways:

  • Simply by Multiplying
  • Using any other tricks

We should use special shortcut trick to find the square of this type of numbers.

Process to Follow

Let we want to find the square of 35 then what we will do

  • First of all we have to remove 5 from the given number
  • Then we have to add 1 with the remaining numbers.
  • Then we have to multiply both the number.
  • At last we have to add 25 in the answer of previous multiplication.

Lets take a example to find the square of 35

  • First of all, remove 5 from the number. ( 3 5)
  • Add 1 with the remaining number. ( 3+1=4) 
  • Now multiply 3 × 4 = 12
  • In the last step, we have to write 25 after previous multiplication result. (  12 ↔ 25=1225) 
  • Here 25 is common to all the question.

Lets take another example to find the square of 65

  • First of all, remove 5 from the number. ( 6 5)
  • Add 1 with the remaining number. ( 6+1=7) 
  • Now multiply 6 × 7 = 42
  • Write 25 after 42
  • Final answer is 4225
  • Here 25 is common to all the question.

Find the square of  85

  • First of all, remove 5 from the number. ( 8 5)
  • Add 1 with the remaining number. ( 8+1=9) 
  • Now multiply 8 × 9 = 72
  • Write 25 after 72
  • Final answer is 7225
  • Here 25 is common to all the question.

Done!

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