Square numbers ending in 25
Step 1. 325 = 3_25 => 3
Step 2. Square the number from Step 1: 32 = 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
1032 = 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):
32 = 09
Step 3. Place the result from Step 2 next to the result from Step 1 : 10609
482 = 2304
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 ) : 32 = 09
Step 3. Place the result from Step 2 next to the result from Step 1 : 2809
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
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):
32 = 09
Step 3. Place the result from Step 2 next to the result from Step 1 : 10609
# Below 100
972 = 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) : 32 = 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
482 = 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 ) : 22 = 04
# Above 50
532 = 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 ) : 32 = 09
Step 3. Place the result from Step 2 next to the result from Step 1 : 2809
Square numbers ending in 5
352 = 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
142 = 196Step 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
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