AnswersTX-College Prep Math BUnit Test

Solving One-Step Equations: Addition and Subtraction Answers

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1
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Helen wrote and solved the equation. What was Helen’s error?

Question illustration
A
Helen only needed to add 17 to the left side of the equation.
B
Helen should have added 17 to both sides of the equation.
C
Helen’s work is correct.
D
Helen made a subtraction error when subtracting 17 from 56.
2
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Sherina wrote and solved the equation. What was Sherina’s error?

Question illustration
A
Sherina’s work is correct.
B
Sherina only needed to subtract 56 from 230.
C
Sherina made a subtraction error when subtracting 56 from 230.
D
Sherina should have added 56 to both sides of the equation.
3

What should be done to solve the equation?

Question illustration
A
Add 17 to both sides.
B
Add 17 to the left side and subtract 11 from the right side.
C
Add 17 to the left side and subtract 17 from the right side.
D
Add 11 to both sides.
4

Which steps are needed to solve this equation?.

Question illustration
A
Subtract 6 from both sides of the equation. The answer is .Check the solution by substituting 15 for b.
Option A
B
Subtract 6 from the left side and add 6 to the right side of the equation. The answer is .Check the solution by substituting 27 for b.
Option B
C
Add 6 to both sides of the equation. The answer is .Check the solution by substituting 27 for b.
Option C
D
Add 6 to the left side and subtract 6 from the right side of the equation. The answer is .Check the solution by substituting 15 for b.
Option D
5

What should be done to solve the equation?

Question illustration
A
Add 14 to both sides of the equation.
B
Subtract 14 from the left side of the equation.
C
Add 14 to the left side and subtract 14 from the right side of the equation.
D
Subtract 14 from both sides of the equation.
6

Which could be used to solve this equation?

Question illustration
A
Subtract from both sides of the equation.
Option A
B
3 and one-fifth minus 3 and one-fifth + n = 9 + 3 and one-fifth
Option B
C
Add to both sides of the equation.
Option C
D
9 + 3 and one-fifth = 12 and one-fifth
Option D
7

Which equation models the problem and shows the correct solution?The difference between x and 89 is 7.

A
Write the equation as and subtract 7 from both sides. The answer is 82.
Option A
B
Write the equation as and add 89 to both sides. The answer is 96.
Option B
C
Write the equation as and add 7 to both sides. The answer is 96.
Option C
D
Write the equation as and subtract 7 from both sides. The answer is 82.
Option D
8

The height of Liliana’s picture frame is 18 inches. The frame and blue matting take up 4.5 inches of the height. Liliana wants to know the height of a picture that will fit in the remaining height of the frame. Which equation and solution can be used to solve this problem?,

Question illustration
A
: Add 4.5 to the left side and subtract 4.5 from the right side of the equation. The answer is 13.5 inches.
Option A
B
: Subtract 4.5 from both sides. The answer is 13.5 inches.
Option B
C
: Subtract 4.5 from both sides. The answer is 13.5 inches.
Option C
D
: Subtract 4.5 from the left side. The answer is 13.5 inches.
Option D
9

Which equation can be used to solve for the unknown number?Seven less than a number is thirteen.

A
n minus 7 = 13
Option A
B
7 minus n = 13
Option B
C
n + 7 = 13
Option C
D
n + 13 = 7
Option D
10

What is the solution to the equation?

Question illustration
A
a + 5 and two-thirds = 9. a + 5 and two-thirds + 5 and two-thirds = 9 minus 5 and two-thirds. A = 3 and one-third.
Option A
B
a + 5 and two-thirds = 9. a + 5 and two-thirds + 5 and two-thirds = 9 + 5 and two-thirds. A = 14 and two-thirds.
Option B
C
a + 5 and two-thirds minus 5 and two-thirds = 9 + 5 and two-thirds. A = 14 and two-thirds.
Option C
D
a + 5 and two-thirds minus 5 and two-thirds = 9 minus 5 and two-thirds. A = 3 and one-third.
Option D
11

What is the solution to the equation?

Question illustration
A
t + 55 = 466. t + 55 minus 55 = 466 + 55. t = 521.
Option A
B
t + 55 = 466. t + 55 + 55 = 466 + 55. t = 521.
Option B
C
t + 55 = 466. t + 55 minus 55 = 466 minus 55. t = 411.
Option C
D
t + 55 = 466. t + 55 + 55 = 466 minus 55. t = 411.
Option D
12

Juan told Sylvia he got a $0.50 raise this week and his new hourly rate will be $10.25 an hour. Sylvia wants to know what Juan’s hourly rate was before his raise. Which equation and solution can be used to solve this problem?

A
: Add 10.25 to both sides. The answer is $10.75.
Option A
B
: Subtract .50 from both sides. The answer is $9.75.
Option B
C
: Subtract .50 from both sides. The answer is $10.75
Option C
D
: Subtract .50 from both sides. The answer is $9.75.
Option D
13

The sum of a number and twenty-one is sixty-four.What is the value of the number?The number equals .

Answer not available
14

Which equation and solution can be used to solve this problem?Thirteen less than a number is sixteen.

A
: Add 13 to both sides. The answer is 29.
Option A
B
: Subtract 13 from both sides. The answer is 3.
Option B
C
: Subtract 13 from both sides. The answer is 3.
Option C
D
: Add 13 to both sides. The answer is 29.
Option D
15

Which equations would you use the subtraction property of equality to solve? Check all that apply.

A
5 y = 20
Option A
B
76 = d + 4
Option B
C
x minus 3 = 17
Option C
D
b minus 13 = 26
Option D
E
h + 2 = 54
Option E
F
z + 9 = 2
Option F

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