Lesson 3: squares and square roots
I Can...
Words to Know
Square: the product of a number and itself. 25 is the square of 5.
Perfect Square: squares of whole numbers - for example, 9, 16, 25, 36 are all perfect squares.
Square Root: the factors multiplied to form perfect squares. For example, 5 is the square root of 25.
Radical Sign: the symbol used to indicate a square root of a number: √
Perfect Square: squares of whole numbers - for example, 9, 16, 25, 36 are all perfect squares.
Square Root: the factors multiplied to form perfect squares. For example, 5 is the square root of 25.
Radical Sign: the symbol used to indicate a square root of a number: √
Examples
3. Word Problems
Video
Video
Tips
Watch out! When taking the square, a very common mistake is to multiply the base by the exponent. For example 4² = 4x4 = 16. NOT 4x2 = 8.
The area of a square is labeled in square units. The sides of a square are labeled units.
The area of a square is labeled in square units. The sides of a square are labeled units.
Extra Examples
Click here for additional examples and self check quizzes.
Problems of the DAY
Answers must be submitted by 9am the following school day!
1. Find the square of 34.
2. Find the square root of 196.
1. Find the square of 34.
2. Find the square root of 196.