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

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Solution

## 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:)  Suggest Corrections  0      Similar questions
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