Simplify Expressions
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Medium
Standards-aligned
Yvette Watson
Used 1+ times
FREE Resource
Student preview
15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Simplify by combining like terms: 5a + 2b - 3a + 4
Back
2a + 2b + 4
Answer explanation
Combine like terms: (5a - 3a) + 2b + 4 = 2a + 2b + 4. Thus, the correct answer is 2a + 2b + 4.
Tags
CCSS.7.EE.A.1
2.
FLASHCARD QUESTION
Front
3x - 5x
Back
-2x
Answer explanation
To simplify 3x - 5x, combine like terms: 3x - 5x = (3 - 5)x = -2x. Thus, the correct answer is -2x.
Tags
CCSS.7.EE.A.1
3.
FLASHCARD QUESTION
Front
Simplify the expression: 3x + 2x
Back
5x
Answer explanation
To simplify 3x + 2x, combine the like terms. Add the coefficients: 3 + 2 = 5. Thus, the expression simplifies to 5x, which is the correct answer.
Tags
CCSS.7.EE.A.1
4.
FLASHCARD QUESTION
Front
-6k + 7k=
Back
k
Answer explanation
To solve -6k + 7k, combine the coefficients: -6 + 7 = 1. Thus, -6k + 7k = 1k, which simplifies to k. Therefore, the correct answer is k.
Tags
CCSS.7.EE.A.1
5.
FLASHCARD QUESTION
Front
-r - 10r
Back
-11r
Answer explanation
To simplify -r - 10r, combine like terms: -1r - 10r = -11r. Thus, the correct answer is -11r.
Tags
CCSS.7.EE.A.1
6.
FLASHCARD QUESTION
Front
Simplify the expression: 2x + 1 + 7x
Back
9x + 1
Answer explanation
To simplify 2x + 1 + 7x, combine like terms: 2x + 7x = 9x. The constant term remains 1. Thus, the expression simplifies to 9x + 1, which is the correct answer.
Tags
CCSS.7.EE.A.1
7.
FLASHCARD QUESTION
Front
Combine like terms
3x + 2x + 3y - 7y
Back
5x - 4y
Answer explanation
Combine like terms: 3x + 2x = 5x and 3y - 7y = -4y. Thus, the expression simplifies to 5x - 4y, which matches the correct answer.
Tags
CCSS.7.EE.A.1
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