Review Sheet: Factors, Multiples, & Arrays (Unit One Exam)
Multiple Choice (4 points each)
Write the letter that best completes the statement or answers the question on the line.
______ 1. Which multiplication sentence is shown by the array?
2 x 3 = 6 c. 1 x 2 = 2
2 + 5 = 7 d. 3 x 3 = 9
_______2. Bob knows 2 x 5 = 10. How can he use this to find 4 x 5?
Add 2 + 4 c. Multiply 5 x 7
Add 10 + 10 d. Add 2 + 5
_______3. Which of the following shows ALL the factors of 6?
1, 6 c. 1, 2, 3, 6
3, 1 d. 1, 6, 3
_______ 4. Which expression is equal to 115?
100 – 15 c. 100 + 5 + 5
50 + 50 + 5 d. 50 + 50 + 5 + 5 + 5
_______5. Which of the following is a composite number?
2 c. 11
6 d. 13
_______6. Which of the following is NOT a factor of 8?
4 c. 5
8 d. 1
_______ 7. What is the next multiple of 6 in this list?
6, 12, 18, 24, 30, 36, _____
7 c. 43
42 d. 50
_______8. Which equation represents the total number of squares shown below?
9 + 1 = 10 c. 9 x 1 = 9
3 x 6 = 18 d. 10 + 10 = 20
_______9. Adam has 56 apples. If Adam wants to put 8 apples in each bag, how many bags will Adam need?
21 c. 7
8 d. 27
_______ 10. Which of the following is a prime number?
9 c. 15
4 d.7
_______11. What symbol should go in the box to make the expression equal to 250?
200 x 1 50
+
–
x
÷
______12. Maria has 12 bookshelves. Each bookshelf can hold 4 books. How many books does Maria have in total? (You may draw an array to help you solve this problem)
2 c. 48
24 d. 3
_______13. Which of the following is NOT a square number?
100 b. 14 c. 81 d. 9
_______14. Find the product of 9 x 6.
15 b. 54 c. 45 d. 35
______15. Which shows the first five multiples of 2?
5, 10, 15, 20, 25
6, 12, 18, 24, 30
1, 2, 3, 4, 5,
2, 4, 6, 8, 10
______16. Evaluate 675 + 300 – 100 – 200 =
550 c. 675
475 d. 420
______17. Which equation represents 3 people counting by 10’s?
3 + 10 = 3 c. 10 – 3 = 7
3 x 10 = 30 d. 30 x 10 = 300
______18. 8 is a factor of what number?
15
24
10
21
______19. James has 6 pieces of gum. Sam has 9 times as many pieces of gum. How many pieces of gum does Sam have?
54
3
72
6
______20. Which of the following will help us solve 8 x 7?
8 x 10 then subtract 8.
8 x 5 then subtract 8.
8 x 5 = 40, then add 8.
8 x 5 plus 8 x 2.
Problem 1 (worth 10 points)
Solve this multiplication combination.
9 x 8 = ____
Explain how you can use another multiplication combination(s) to help you get the answer.
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Draw a picture of either arrays, objects, or cubes to show that your answer is correct.
Write a story to go with the problem 9 x 8.
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Problem 2 (worth 10 points)
You have 8 cans of juice.
Show all the ways you can arrange these cans into arrays. You may either draw arrays in the space below or write all the ways.
List all the factors of 8.
BONUS (Worth up to 5 points)
A rectangular garden has length of 13 meters and width of 3 meters. What is the area of the rectangular garden? (*Hint: to find the area of a rectangle , you do length times width)
List all the factors of 200.
