AnswersNC-Math 4 CRAdding and Subtracting Matrices

Modeling Real-World Problems with One-Step Equations Answers

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Don was asked to write an equation and solve this problem. A group of eight friends bought tickets to an amusement park and spent $134 total. How much did each ticket cost?Don’s work is shown below. StepsDon’s WorkStep 1Step 2Step 3 In which step, if any, did Don first make a mistake in his work?

Question illustration
A
step 1
B
step 2
C
step 3
D
no mistake
2
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Yoshi has $234 to spend on his holiday shopping. Using the information in the table, write and solve an equation to determine the number of MP3 players he can buy.Which number line shows the number of MP3 players that Yoshi can buy?

Question illustration
A
A number line going from negative 8 to positive 8. A point is at positive 3.
Option A
B
A number line going from negative 8 to positive 8. A point is at positive 5.
Option B
C
A number line going from negative 8 to positive 8. A point is at positive 6.
Option C
D
A number line going from negative 8 to positive 8. A point is at positive 7.
Option D
3

Lindsay has saved $134.75 to buy a tablet. How much more money does she need to save before she can buy the tablet? Write an equation and solve it by using the information in the table.

Question illustration
A
$1.48
B
$64.25
C
$164.25
D
$333.75
4

The cost of 5 pounds of apples is $6.45. Which statements can be used to solve for a, the cost of each pound of apples? Check all that apply.

A
To solve, find the cost of 1 pound of apples; write a multiplication equation.
B
To solve, find the cost of 1 pound of apples; write an addition equation.
C
The correct equation for this problem is . Solve this problem by dividing both sides by 5.
Option C
D
The correct equation for this problem is . Solve this problem by multiplying both sides by 5.
Option D
E
Each pound of apples costs $1.28.
F
Each pound of apples costs $1.29.
5

Sami cut inches off a long roll of paper. If the roll is now inches long, how long was the original roll of paper? Write an equation and solve it to find the answer.

Question illustration
A
inches
Option A
B
inches
Option B
C
inches
Option C
D
inches
Option D
6

A baker needs a total of cups of flour to make four batches of cookies. How much flour, in cups, does she need for each batch of cookies? Write and solve an equation to find the answer.

Question illustration
A
StartFraction 5 Over 6 EndFraction
Option A
B
3 and one-third
Option B
C
9 and one-third
Option C
D
12
7

Stan ran miles, which was fewer miles than Matt ran. Four students wrote and solved equations to find m, the number of miles that Matt ran. Which student wrote and solved the equation correctly?

Question illustration
A
Molly’s work:
Option A
B
Emma’s work:
Option B
C
Alysa’s work:
Option C
D
Maddie’s work:
Option D
8

Sebastian bought a 30-pack of mechanical pencils and plans to give the same number of pencils each to 6 friends. Which equation can he use to find p, the number of pencils each friend will receive?

A
p + 6 = 30
Option A
B
p minus 6 = 30
Option B
C
6 p = 30
Option C
D
StartFraction p Over 6 EndFraction = 30
Option D
9

Molly shared a spool of ribbon with 12 people. Each person received 3 feet of ribbon. Which equation can she use to find r, the number of feet of ribbon that her spool originally had?

A
3 + r = 12
Option A
B
r minus 3 = 12
Option B
C
3 r = 12
Option C
D
StartFraction r Over 12 EndFraction = 3
Option D
10

Olaf needs a total of 3 cups of sugar to make 4 cakes. Write and solve an equation to find the number of cups of sugar he needs for each cake. Which number line shows the number of cups of sugar Olaf needs for each cake?

A
A number line going from negative 1.5 to positive 1.5. A point is at positive 0.75.
Option A
B
A number line going from negative 1.5 to positive 1.5. A point is at positive 1.
Option B
C
A number line going from negative 1.5 to positive 1.5. A point is at positive 1.30.
Option C
D
A number line going from negative 1.5 to positive 1.5. A point is at positive 1.5.
Option D

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