Question

Sir,

How can I by heart the first twenty square number. Can I have any trick or tip to by heart

Answer 1

First 10 numbers square are easy to remember there is no trick to calculate the square of 1 to 10.
number square of no.
1. 1
2. 4
3. 9
4 . 16
5. 25
6. 36
7. 49
8. 64
9. 81
10. 100
Square of number
from 10 to 19 there will be a trick to calculate square easily. Square numbers between 10 and 19 by an example it will be easy to understand. 14² = 196

Step 1: Add the number to the ones digit : 14 + 4 = 18

Step 2: Multiply the number from Step 1 by 10: 18 *10 = 180

Step 3: Square the ones digit number 4² = 16

Step 4: Add Step 2 and Step 3 : 180 + 16 = 196
please try this method for other number number should be between 10 t0 19 only.and the square of 20 is 400 easy to remember.
Hope this helps:)