### Square numbers ending in 25

**Step 1.**325 = 3_25 => 3

**Step 2.**Square the number from Step 1: 3

^{2}= 9

**Step 3.**Divide the number from Step 1 by 2: 3/2 =1.5

**Step 4.**Add Step 2 and Step 3 : 9 + 1.5 = 10.5

**Step 5.**Multiply the number from Step 4 by 10: 10.5 * 10 =105

**Step 6.**Write the number 625 next to the result from Step 5: 105_625 = 105625

### Square numbers between 80 and 130

#### # Above 100

103

103 + 3 = 106

3

48

^{2}= 10609**Step 1.**Add the number to the ones digit:103 + 3 = 106

**Step 2.**Square the ones digit number ( if the result is a single digit put a 0 in front of it):3

^{2}= 09**Step 3.**Place the result from Step 2 next to the result from Step 1 : 10609#### # Below 100

97

^{2}= 9409**Step 1.**Subtract the number from 100: 100- 97 = 3

**Step 2.**Subtract the number ( from Step 1) from original number : 97-3 =94

**Step 3.**Square the result from Step 1 ( if the result is a single digit put a 0 in front of it) : 3

^{2}= 09

**Step 4.**Place the result from Step 3 next to the result from Step 2: 9409

### Square numbers between 30 and 80

#### # Below 50

48

^{2}= 2304

**Step 1 .**Subtract the number from 50: 50-48=2

**Step 2 .**Subtract the result ( from Step 1 ) from 25: 25-2 =23

**Step 3 .**Square the result from Step 1 ( if the result is a single digit put a 0 in front of it ) : 2

^{2}= 04

#### # Above 50

53

^{2}= 2809**Step 1.**Add 25 to the ones digit: 25 + 3 = 28

**Step 2.**Square the ones digit number ( if the result is a single digit put a 0 in front of it ) : 3

^{2}= 09

**Step 3.**Place the result from Step 2 next to the result from Step 1 : 2809

## Square numbers ending in 5

35

^{2}= 1225**Step 1.**Multiply the first digit by the first digit plus one: 3 * ( 3 + 1 ) = 12

**Step 2.**Write the numbers 25 next to the result from Step 1 : 1225

### Square numbers between 10 and 19

14^{2}= 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 4

^{2}= 16

**Step 4**: Add Step 2 and Step 3 : 180 + 16 = 196

### Square of Nearest value of 100,200,300...so on

- Numbers Between 101 & 125
- Numbers Between 126 & 150
- Numbers Between 151 & 175
- Numbers Between 176 & 200