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Unit 1 CFA (Equations - 8th Grade Math)
By Jennifer Briselden
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Last updated 4 months ago
11 questions
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A.CED.1
A.REI.1
A.REI.3
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Question 1
1.
Solve for n.
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Question 2
2.
Solve for p.
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Question 3
3.
Solve for n.
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Question 4
4.
Solve for x.
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Question 5
5.
Solve for m.
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Question 6
6.
Jimbo was solving the equation below. What mistake did he make as he moved from step 1 to step 2. Explain the mistake Jimbo made.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
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Student A solves the equation 5x + 9 -3x = 2(5x+4). Some of the steps are shown below.
Step 1: 5x + 9 -3x = 2(5x + 4)
Step 2: 5x + 9 - 3x = 10x + 8
Step 3: 2x +9 = 10x + 8
Step 4: 9 = 8x + 8
Step 5: 1 = 8x
Step 6: 1/8 = x
Which of the following statements BEST describes what Student A did to get from step 2 to step 3.
used the addition property of equality
used the subtraction property of equality
combined like terms
used the distributive property
What property of equality would you use FIRST to solve the equation?
Subtraction Property of Equality
Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
What step would you do first to answer this question?
Division Property of Equality
Subtraction Property of Equality
Combine Like Terms
Addition Property of Equality
Distribute
Multiplication Property of Equality
What step would you do first to answer this question?
Addition Property of Equality
Distribute
Subtraction Property of Equality
Combine Like Terms
Which of the following equations has EXACTLY one solution?
4
x
– 8 =4
x
– 16
3
x
+ 1 = 3
x
+ 1
6x
+ 4 = 2
x
– 8
3x
– 4 + 5
x
= 8
x
– 4