MTH001B |Math Foundations I | Unit 3 Graded Assignment| Multiplication, Division, and Decimals
Name: / Date:Answer Key
Unit 3 Assignment
Award points for answers as shown below. Starter feedback for correct and incorrect answers is in red. Use or adapt the feedback in this Answer Key as you grade each student paper. If you have suggestions for improving this key, send them to .
Solve the following problems:
(1 point)
1. Carly wants to give each of her teachers a gift at the end of a school party. If she has 4 teachers and $44 dollars, how much can she spend on each teacher?
Choose the operation that you would use to solve this problem.
multiplication
division
addition
subtraction
Answer: division
(1 point)
2. Jennifer and Courtney have been training to run a marathon. Courtney can run 17 miles without stopping and Jennifer can run 14.5 miles without stopping. If a marathon is approximately 26 miles, how many more miles does Courtney need to be able to run?
Choose the operation that you would use to solve this problem.
multiplication
division
addition
subtraction
Answer: subtraction
(1 point)
3. There are 365 days in a year. If Luke saves $4 per day each day of the year, how much money will he have saved after 365 days?
Choose the operation that you would use to solve this problem.
multiplication
division
addition
subtraction
Answer: multiplication
(1 point)
4. The yearbook students created a bulletin board to advertise the sale of the books. They used blue and white pieces of paper. The bulletin board is 6 feet x 6 feet. What is the area of the bulletin board?
Which sentence is not necessary for you to solve the problem?
The bulletin board is 6 feet x 6 feet.
They used blue and white pieces of paper.
Answer: They used blue and white pieces of paper.
(1 point)
5. There were 12 people on the jury. Seven were women. Five of the jurors were over 50 years old. Three jurors were under 30 years old. How many jurors were men?
Answer: 5
(1 point)
6. Alison had 15 comic books, 13 joke books, and 19 puzzle books. She gave Wendy 5 comic books. How many comic books did she have left?
Answer: 10
(1 point)
7. Mrs. Howard spent $11.99 for brownies, $10.75 for chips, and $22.77 for decorations for the class party. How much did she spend on food?
Answer: $22.74
(1 point)
8. Megan bought bird seed for $3.50. She paid with a $5 dollar bill. Should she receive more than 2 dollars back in change?
Answer: no
(1 point)
9. Andy bought a box of cookies that weighed 1 lb. Claire bought cookies weighing 20 oz. They paid the same amount. Who got the better buy?
Answer: Claire
(1 point)
10. Each lunch table seats 10 people. There are 15 tables in the cafeteria. How many students can eat lunch at one time?
Do you have enough information to solve the problem?
Answer: yes
(1 point)
11. A hummingbird may flap its wings between 68,400 and 280,800 times per hour. How many calories do hummingbirds need each day?
Do you have enough information to solve the problem?
Answer: no
(1 point)
12. Students go to school 20 days in one month. How many miles did one student walk to and from school in one month?
What information would be helpful for you to solve this problem?
the distance from the student’s house to the school
how long it takes the student to walk to school each day
how many people in the student’s neighborhood walk to school
Answer: the distance from the student’s house to the school
(1 point)
13. Eric's average grade for 5 spelling tests was 85. Laura's average was 90. Kelly's average was 92. Mark's was 3 points higher than Eric's. Was Mark's average more or less than Laura's?
Answer: less than
(1 point)
14. Melody used 2 cups of milk, 7 cups of cream, and 3 cups of water in a recipe. How many quarts of liquid were in the recipe?
Answer: 3 quarts
(1 point)
15. Tara bought groceries totaling $15.45. Ryan's groceries cost $17.88. Erin's groceries cost one fourth the cost of Ryan's. What was the total cost of all the groceries?
Answer: $37.80
(1 point)
16. At the barbecue, there are 10 packages of hot dog buns. There are 8 buns in each package. There are 9 packages of hot dogs, with 8 hot dogs in a package. How many buns will be left over?
Answer: 8 buns
(1 point)
17. Sarah has 3 times as many silver dollars as Hayley. Krista has 5 more silver dollars than Hayley. Emily has 3 fewer silver dollars than Hayley. Emily has 9 silver dollars. How many silver dollars does Sarah have?
Answer: 36 silver dollars
(1 point)
18. Five king-sized candy bars cost $4.25 and 10 cost $8.50. You get twice as many candy bars for twice the amount of money. In other words, the price per candy bar is the same no matter how many you buy.
Is the underlined sentence reasonable?
Answer: no
(1 point)
19. ? – 751 = 314
Answer: 1065
(1 point)
20. The students in Mrs. Nelson's class are writing book reports. The book Travis chose has 246 pages. If he reads 20 pages every day after school, will Travis be able to read the entire book in 11 days?
Answer: no
(1 point)
21.
Answer: 1407
(1 point)
22.
Answer: 6080
(1 point)
23. Which property is demonstrated in this operation? (21 x 2) x 3 = 21 x (2 x 3)
zero
associative
commutative
Answer: associative
(1 point)
24. What property is demonstrated in this operation? (3 x 7) x 8 = 3 x (7 x 8)
distributive
associative
commutative
Answer: associative
(1 point)
25. What property is demonstrated in this operation? 7,864 x 1 = 7,864
identity
zero
associative
Answer: identity
(1 point)
26. Use mental math to solve this problem. Choose the fact that could help. 4000 x 50
4 x 5
40 x 50
4 x 400
Answer: 4 x 5
(1 point)
27. 0.6 x 0.6=
Answer: 0.36 or .36
(1 point)
28. 2.2 x 0.004 =
Answer: 0.0088 or .0088
(1 point)
29. Round 60.09 to the nearest whole number.
Answer: 60
(1 point)
30.
Answer: 12.5
(1 point)
31.
Answer: 22.5
(1 point)
32.
Answer: 378.56
(1 point)
33.
Answer: 358.7
(1 point)
34.
Answer: 2.1
(1 point)
35.
Answer: 14
(1 point)
36. Use repeated multiplication to show the exponent.
Answer: 8 x 8 x 8 x 8
(1 point)
37. Choose the number that has a 3 in the hundreds place.
45,632,246
67,276,389
71,423,571
Answer: 67,276,389
(1 point)
38. The total attendance of six sporting events for one year was 468,359,287.
Round this number to the nearest ten thousand.
Answer: 468,360,000
(1 point)
39. Write this number in standard form.
four thousand three hundred seventy-two and eighteen hundredths
Answer: 4,372.18
(1 point)
40. Round $198.57 to the nearest dollar.
Answer: $199
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