## Square of a number made up of threes

Finding the square of a number made up of threes

Choose a number made up of threes.

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1. Add 1 n-1 times (where n is the number of 3’s)

2. Add a zero

3. Add 8 n-1 times (where n is the number of 3’s)

4. Add a nine

E.g. **Find the square of 333**

1. Since we need to find the square of 333(which has three 3’s, n=3)

2. Add 1 n-1 times (3-1 =2) 11

3. Add a zero 110

4. Add 8 n-1 times (2 times) 11088

5. Add a nine 110889

Find the square of 3333333

1. n=7 ( as the number has 7 3’s)

2. Add 1 n-1 times (7-1 =6) 111111

3. Add a zero 1111110

4. Add 8 n-1 times (6 times) 1111110888888

5. Add a nine 11111108888889

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