Squares, Cubes, and Their Roots
8th Grade•110 minutes•HS.N-RN.A
Learning Objective
I can evaluate perfect squares, perfect cubes, square roots, and cube roots.
Key Concepts
Roots are the inverse operation of exponents; they 'undo' exponents.
The root symbol is also called the radical sign, and the number you want to take the root of goes under the sign.
The 2nd root is called the square root and the 3rd root is called the cube root.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
View questions preview
1. What is the inverse operation of squaring a number?
2. Explain the relationship between exponents and roots.
3. What is the square root of 81?
...and 9 more questions
Educational Video
Math Antics - Exponents and Square Roots
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