8R Unit 1 Test Review!
Authored by Ms. Rogala
Mathematics
8th Grade
CCSS covered
Used 6+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Find the value of the expression below when n = 2.
5 + 3n
16
11
Answer explanation
PLUG IN 2 for n using parentheses, and then type the expression into your calculator!
5 + 3(2)
Tags
CCSS.6.EE.A.2C
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which equation has the solution x = 4?
5x + 4 = -24
6x - 4 = 20
Answer explanation
PLUG IN!
5(4) + 4 = 24 (NOT -24!)
6(4) - 4 = 20 CORRECT!
Tags
CCSS.6.EE.B.5
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
When you combine like terms for the equation below, what will be the resulting equation?
3x + 6 + 7x + 3 = -13
10x + 9 = -13
-4x + 9 = -13
Answer explanation
Combine the x's:
3x + 7x --> 10x
Combine the constants:
6 + 3 --> 9
Tags
CCSS.7.EE.A.1
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What should be your FIRST STEP to cancel the "x" on the right side of the equation?
8x - 10 = -2x + 5
Subtract 2x on both sides.
Add 2x on both sides.
Answer explanation
To CANCEL, we use the OPPOSITE operation.
The opposite of -2x is +2x!
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following best describes the solution to the equation below?
3x + 13 = 3x + 13
There is no solution.
There are infinitely many solutions.
Answer explanation
EXACT SAME THING ON BOTH SIDES! --> infinitely many
Coefficients of x are the same (both 3) and the constants are the same (both 13).
Tags
CCSS.8.EE.C.7A
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following best describes the solution to the equation below?
8x + 2 = 8x + 6
There is no solution.
There are infinitely many solutions.
Answer explanation
Coefficients of x are the same (both 8) but the constants are NOT (2 and 6) -->
NO solution!
Tags
CCSS.8.EE.C.7A
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which property was used to simplify the expression shown below?
Line 1: 4(x + 3)
Line 2: 4x + 12
commutative property
associative property
multiplicative inverse property
distributive property
Answer explanation
Tags
CCSS.6.EE.A.3
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