Powers and Roots
Powers and Roots is a Grade 7-8 math skill that introduces students to exponential notation, calculating powers of numbers, and finding square and cube roots. Students learn that squaring and taking a square root are inverse operations, and apply these concepts to problem solving.
Key Concepts
New Concept This course transforms basic arithmetic into a powerful language. You'll learn to use numbers and symbols to describe patterns and solve complex, real world problems. What’s next Our journey begins with a fundamental concept: powers and roots. Next, you’ll dive into worked examples showing how these tools simplify multiplication and solve for area.
Common Questions
What is a power in math?
A power is a way to express repeated multiplication. For example, 2 to the 4th power means 2 times 2 times 2 times 2, which equals 16.
What is the square root of a number?
The square root of a number is the value that, when multiplied by itself, gives the original number. For example, the square root of 25 is 5.
What is the cube root of a number?
The cube root of a number is the value that, when cubed, gives the original number. For example, the cube root of 27 is 3.
How are powers and roots related?
Powers and roots are inverse operations. Squaring a number and taking its square root undo each other.
What grade level covers powers and roots?
Powers and roots are introduced in Grade 6-7 and developed further in Grade 8.