1. Grab a guided practice sheet. Solve: Round to one decimal place: √79=
Bellwork
Grab a guided practice sheet.
Solve:
Round to one decimal place: √79=
X2= 169
Is √48 a perfect square? Yes or no

2. Find your opponent and compare your answers.
Bellwork
Find your opponent and compare your answers.
Find out who won and who lost.
Whoever won the most numbers wins

3. Perfect Cubes and Cube Roots
Remember:
A cube is a three dimensional (3-D) prism with 6 square faces; so all sides are congruent(same) and all angles are right angles.

4. Perfect Cubes and Cube Roots
Squares and Cubes:
Similarities:
- All sides congruent (same)
- All angles 90 degrees
Differences:
- Square is 2 dimensional
- Cube is 3 dimensional that number’s square root.

5. Perfect Cubes and Cube Roots
Remember:
A number is a perfect square if you multiply the same number such as:
1 x 1 unit squares and form them into a square. The side length of the square you form is that number’s square root.

6. 3 x 3 = 9 3 3

7. 3
The square root of 9 is

8. Remember:
A number is a perfect cube if you multiply the same number such as:
1 x 1 x 1 unit cubes and form them into a cube. The side length of the cube you form is that number’s cube root.

9. Perfect Cubes and Cube Roots
Is 8 a perfect cube?
that number’s square root.

10. Perfect Cubes and Cube Roots
that.

11. Perfect Cubes and Cube Roots
8 is a perfect cube and its cube root is 2
A perfect cube is a number that can be written as
the cube (raised to third power) of another number.

12. Perfect Cubes and Cube Roots
Is 5 a perfect cube?

13. Perfect Cubes and Cube Roots
Is 5 a perfect cube?

14. Perfect Cubes and Cube Roots
Perfect Cube: 8 Cube Root 2
Volume: 8 units3 Side Length: 2 units

15. X3 1 8 27 64
125
216
343
512
729
1000
1331
1728 X 2 3 4 5 6 7 9 10 11 12

16. Perfect Cubes and Cube Roots Make chart 1-10 on side length
Volume Operation
Volume
Perfect Cube
1 unit
1 x 1 x 1
1 units3 1
2 units
2 x 2 x 2
8 units3 8

17. Perfect Cubes and Cube Roots Make chart 1-10 on side length
Volume Operation
Volume
Perfect Cube
1 unit 13
1 units3 1
2 units 23
8 units3 8
3 units 33
27 units3 27
4 units 43
64 units3 64

18. Perfect Cubes and Cube Roots
Square Root Cube Root
√ ∛
Area
Volume
cube
square

19. The cube root of 64 is written as
Cube Roots and Cubes are Opposites
The cube root of 64 is written as
because

20. Examples: