1. Expressions and Equations Part 2
8.EE.2
Expressions and Equations
Part 2

2. 8.EE.2
Use square root and cube root symbols to represent solutions to equations of the form x2 = p and x3 = p, where p is a positive rational number. Evaluate square roots of small perfect squares and cube roots of small perfect cubes. Know that √2 is irrational.

3. 8.EE.2 Students recognize Perfect squares and cubes
Non-perfect squares and non-perfect cubes are irrational
Squaring a number and square rooting a number are inverse operations
Cubing a number and cube rooting a number are inverse operations

4. 8.EE.2 Perfect squares and cubes Create an example below:
Example: square root of 81 is a perfect square, cube root of 8 is a perfect cube
Example: square root of 80 is not, cube root of 7 is not
Create an example below:

5. 8.EE.2
Squaring a number and square rooting a number are inverse operations
Example: “squaring a number” 4^2=16
Inverse operation = square root of 16 equals 4
Give an example below:

6. 8.EE.2
Cubing a number and cube rooting a number are inverse operations
Example: “cubing a number” 2^3=8
Inverse operation = the cube root of 8 is 2
Give an example below:

7. 8.EE.2 Squaring and Square rooting a number Give an example below:
Example: Squaring a number = (1/3)^2
Square the numerator = 1^2 = (1*1) = 1
Square the denominator = 3^2 = (3*3) = 9
Then put it together = 1/9
Example: Square rooting a number = Square root of (1/9)
Square root the numerator = square root 1 = 1
Square root the denominator = square root 9 = 3
Give an example below:

8. 8.EE.2 Cubing and Cube rooting a number Give an example below:
Example: Cubing a number = (2/3)^3
Cube the numerator = 2^3 = (2*2*2) = 8
Square the denominator = 3^3 = (3*3*3) = 27
Then put it together = 8/27
Example: Cube rooting a number = Cube root of (8/27)
Cube root the numerator = cube root 8 = 2
Cube root the denominator = cube root 27 = 3
Give an example below: