Like Terms Retest

Quiz
•
Mathematics
•
8th Grade
•
Medium
+7
Standards-aligned
Dean Lollis
Used 7+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name for the letters that represent something unknown in a math problem?
Constants
Coefficients
Equations
Variables
Answer explanation
In math, letters that represent unknown values are called variables. They are used to denote quantities that can change or vary, distinguishing them from constants, which have fixed values.
Tags
CCSS.6.EE.A.2
CCSS.6.EE.B.5
CCSS.6.EE.B.6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What's the name for the number that is front of a variable?
coefficient
variable
constant
factor
Answer explanation
The number in front of a variable is called a coefficient. It indicates how many times the variable is multiplied. For example, in 3x, 3 is the coefficient of the variable x.
Tags
CCSS.6.EE.B.6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name for the numbers (without variables) in an equation?
Constants
Expressions
Coefficients
Variables
Answer explanation
In an equation, the numbers without variables are called constants. They represent fixed values, unlike variables which can change. Therefore, the correct answer is 'Constants'.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2(2x) - 3
4x + 6
2x - 3
4x - 6
Answer explanation
To simplify 2(2x - 3), distribute the 2: 2 * 2x = 4x and 2 * -3 = -6. Thus, the expression simplifies to 4x - 6, which is the correct answer.
Tags
CCSS.6.EE.A.3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7x + y + 4
7x - y + 4
2x + 2y + 4
5x + 5y + 4
Answer explanation
Combine like terms: 2x + 5x = 7x and -2y + 3y = y. Thus, the expression simplifies to 7x + y + 4, which matches the correct answer choice.
Tags
CCSS.6.EE.A.3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5x
9x
6x
8x
Answer explanation
To simplify 7x - 2x + 4x, combine like terms: (7 - 2 + 4)x = 9x. Thus, the correct answer is 9x.
Tags
CCSS.6.EE.A.3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
8a - 6b + 3
6a - 9b - 2
12a - 7b - 2
5a - 7b + 1
Answer explanation
Combine like terms: 7a + 5a = 12a and -8b + b = -7b. The constant -2 remains unchanged. Thus, the expression simplifies to 12a - 7b - 2, which matches the correct answer.
Tags
CCSS.6.EE.A.2
CCSS.6.EE.A.3
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