1. Pre-Algebra Q3W8: Square and Cube Roots
Objective: I can evaluate square
roots of small perfect squares and
cube roots of small perfect cubes.

2. Square Root Practice
Solve for “x” x2 = 36 x2 = 49 x2 = 9 x2 = 4/9 x2 = 9/25
x =

3. Square Root Review
Square roots always have two solutions, the negative and the positive solution:
Example:

4. Square Root Practice
Solve for “x” x2 = 28 x2 = 85
x =

5. Square Roots

6. Square Roots

7. Square Roots

9. The difference between “square” and “cube”
A “square” is two dimensional, a “cube” is three-dimensional.
33 = = 9

10. Cubes and Cube Roots

11. Cubes and Cube Roots

12. Fill in the Cube Chart

13. Cubes and Cubed Roots
Let’s Practice

14. Cube Roots
Let’s practice APPROXIMATING cube roots:

15. Approximating Cubes

16. Game Time The cards are your “base.” The die is your “exponent.”
Roll die, highest number goes first.
Turn over the top card and roll the die.
Calculate the value and write it on your sheet.
Play 6 rounds, highest total wins.
Ace = 1 Jack = 11
Queen = 12 King = 13
All the rest of the cards are face value.

17. Rational Approximations
Your turn!