Unknown Multiplication

What number should fill in both of these blanks?

• 10

• 9

• 6

• 3

Mrs. Josephine wrote this equation on the board and asked her students to solve for the unknown number and to show their work. Which statement is true based on the students’ work?

• Jonathan is correct and he used the relationship between multiplication and division.

• Mandy is correct and she used an array.

• Steven is correct and he used a strip diagram.

• Jonathan and Mandy are correct because 7 groups of 8 is 64.

Brandon wants to determine how many groups of 9 can be made from 63. Which of the following equations will not help him solve this problem?

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Jackson has several packs of gum that each contains 5 pieces. If he has a total of 70 pieces of gum, which representation does not show a way to find the number of packs Jackson has?

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Kevin has 8 boxes, each containing 3 yoyos. He wants to put an equal number of these yoyos into 6 goodie bags, shown above. If Kevin uses all the yoyos, how many yoyos will be in each goodie bag?

• 2 yoyos

• 4 yoyos

• 17 yoyos

• 24 yoyos

Glue sticks are sold in packages of 4, shown above. Mr. Martin wants to purchase exactly 48 glue sticks. How many packages does he need to purchase?

• 52 packages

• 192 packages

• 12 packages

• 44 packages

John is moving into a new house. His living room has sides of 40 feet and 9 feet. What is the area of his living room? (What operation should I use to solve?)

• Addition

• Multiplication

• Subtraction

• Division

What is the product of 6 and 8?

• 14

• 2

• 48

• 13

Cameron needs to find the unknown number in the equation 6 x _ =54. Which equation has the same unknown number?

• 54 - 6 = _

• 54 + 6 = _

• _ x 54 = 6

• 54 / _ = 6

Ida made 6 necklaces with 40 beads on each necklace. How many beads did she use?

• 34

• 46

• 240

• 640