Adding and Subtracting Radicals
Flashcard
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a radical in mathematics?
Back
A radical is a symbol used to represent the root of a number, most commonly the square root (√) or cube root (∛).
Tags
CCSS.8.NS.A.1
2.
FLASHCARD QUESTION
Front
How do you simplify the expression √20?
Back
√20 can be simplified to 2√5 because 20 = 4 * 5 and √4 = 2.
3.
FLASHCARD QUESTION
Front
What is the process for adding radicals?
Back
To add radicals, they must have the same index and radicand. If they do, you can add the coefficients of the radicals.
4.
FLASHCARD QUESTION
Front
What is the result of √5 + √20?
Back
The result is 3√5 after simplifying √20 to 2√5 and combining like terms.
5.
FLASHCARD QUESTION
Front
How do you subtract radicals?
Back
Similar to addition, you can only subtract radicals with the same index and radicand by subtracting their coefficients.
6.
FLASHCARD QUESTION
Front
What is the cube root of 8?
Back
The cube root of 8 is 2, since 2 * 2 * 2 = 8.
Tags
CCSS.8.EE.A.2
7.
FLASHCARD QUESTION
Front
What does it mean for radicals to be like terms?
Back
Radicals are like terms if they have the same index and radicand, allowing them to be combined.
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