Number Squares and Square Root

Find the square root of 2025 using prime factorization method.

Find the square root of 225 using successive subtraction of odd numbers starting from 1.

The digit at unit’s place of square of 289

The smallest 4-digit perfect square is

15²

• 225

• 125

• 255

• 265

You can find the square root of any number by...

• dividing the number by 2.

• adding the number to itself.

• finding what number multiplied by itself equals the number under the square root.

• doubling it then subtracting the original number.

x² = 100

• 10

• 10 or -10

• 50

• 50 or -50

12²

• 144

• 134

• 122

• 145

14²

• 169

• 196

• 186

• 296

18²

• 324

• 144

• 256

• 400