OA Review 3rd Grade

3.OA.8

Calculator Active

Mrs. Taylor is repairing books for the library. She will repair a total of 150 books. The first 5 days she repaired 7 books each day. How many more books does Mrs. Taylor need to repair?

• 157 books

• 143 books

• 115 books

• 35 books

3.OA.8

Calculator Active

Tiffany has 6 math problems to complete. She spends 7 minutes on each problem and then spends 23 minutes checking over all her answers. How many minutes did she spend on the math problems?

• 65 minutes

• 36 minutes

• 96 minutes

• 42 minutes

3.OA.8

Calculator Active

Mrs. Carper made two rows of desks with 8 desks in each row. Then she removed one desk from one of the rows. After removing one desk, what is the total number of desks in the two rows?

• 7 desks

• 8 desks

• 15 desks

• 16 desks

Calculator Active

Jamie has a closet with 9 shelves.

-She only used 6 of the shelves.

-She put 9 shirts on each shelf.

Which choice shows another way Jamie could put the same number of shirts in the closet, but this time, using all of the shelves?

• 3 shirts on each shelf

• 15 shirts on each shelf

• 54 shirts on each shelf

• 6 shirts on each shelf

NC3, OA Calculator Active

Ten students need six pencils each. They already have 40 pencils. How many more pencils do they need?

• 20

• 40

• 56

• 100

OA.2 Calculator Active

Trey has 27 buttons in 3 cups with the same number of buttons in each cup. Which number sentence could be used to find the number of buttons, b, in each cup?

• 27 + 3 = b

• 27 - 3 = b

• 27 X 3 = b

• 27 ÷3 = b

OA.3 Calculator Inactive

Which equation is true when s = 9?

• 8= 30 ÷ s

• 3= 27 ÷ s

• 6= 24 ÷ s

• 9= 27 ÷ s

OA3 Calculator Inactive

Sammie has 48 pokemon cards. He will give all of the pokemon cards to 6 of his friends. Each friend will receive the same number of pokemon cards. Which equation will help Sammie decide how many pokemon cards, k, to give to each friend?

• 48 - 6 = k

• 48 - k = 6

• k ÷ 6 = 48

• 6 x k = 48

OA3 Calculator Inactive

Amari baked 72 sugar cookies for Mother’s Day. If she could fit 8 cookies on a sheet, which equation shows how many cookie sheets, n, she used?

• 72 + 8 = n

• n $\div$ 8 = 72

• 8 x n = 72

• 72 - 8 = n

OA9 Calculator Inactive

Which expression can be used to find the missing number in this pattern?

64, 56, 48, _____, 32, 24

• 24 + 8

• 48 - 10

• 48 - 8

• 56 + 40