Multiplication Unit Review #1

Which of the following numbers is a factor of 48?

• 5

• 8

• 14

• 30

What are all the factors of 30?

• 1, 2, 3, 5, 6, 10, 15, 30

• 1, 2, 3, 6, 10, 30

• 1, 3, 5, 10, 15, 30

• 1, 2, 5, 10, 15, 30

3) Which number is a multiple of 6? (4.ATO.4)

• 14
• 26
• 36
• 46

4) Which number is prime? (4.ATO.4)

• 18
• 27
• 37
• 44

5) Classify the number 25 as prime, composite, or neither. (4.ATO.4)

• prime
• composite
• neither
• both

Which of the following statements is a correct multiplicative comparison?

• 24 is 3 times as many as 8.

• 36 is 5 times as many as 6.

• 50 is 10 times as many as 5.

• 18 is 4 times as many as 5.

7) Interpret the equation: 54 = 6 x 9. Which statement is true? (4.ATO.1)

• 54 is 6 times as many as 9
• 9 is 6 times as many as 54
• Both of the above
• Neither of the above

Write a multiplication equation to represent the statement: "15 is 3 times as many as 5"?

• 15 = 3 x 5

• 15 = 3 + 5

• 15 = 5 + 3

• 15 = 5 x 4

9) If a student writes the equation 40 = 8 × 5, how should it be interpreted?

• 40 is eight more than 5
• 40 is eight times as many as 5
• 40 is two times as many as 8

• 40 more than 8 is five

Sarah has 4 times as many blue marbles as she has yellow marbles. If she has 16 blue marbles, how many yellow marbles does she have?

• 4 yellow marbles

• 5 yellow marbles

• 6 yellow marbles

• 8 yellow marbles