Third Grade Computation and Estimation

7/28/2019 Third Grade Computation and Estimation

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Name:_____________________________________________ Date:________________________

1. Which is the BEST estimate of the total cost of these school supplies?

A. $3.00

B. $4.00C. $5.00

D. $6.00

2. Which is another way to write 3 9?

A. 3 + 9

B. 9 + 9

C. 3 + 3 + 3

D. 9 + 9 + 9

3. Which subtraction fact checks the number sentence?

8 + 7 = 15

A. 15 - 10 = 5

B. 8 - 7 = 1

C. 15 - 7 = 8

D. 7 - 5 = 2

3rdmath_CE (3rdmath_CE)

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4. Which shows 18 3?

A.

B.

C.

D.

5. Use the picture below to answer this question.

Which of the following statements describes the picture?

A. 4 + 4 = 2 + 4

B. 4 4 = 2 4

C. 2 4 = 4 2

D. 2 + 4 = 4 + 2

6. What number belongs in the box to make the number sentence below true?

8 0 4 =A. 32

B. 8

C. 4

D. 0


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7. Kim wrote 12 + 12 + 12 + 12. How else could she write this problem?

A. 4 + 12

B. 12 4

C. 12 4

D. 4 12

8. Which is the BEST estimate for the difference?

A. 8

B. 10

C. 20

D. 60

9. Multiply.

A. 470

B. 480

C. 510

D. 520

10. A subtraction sign ( ) correctly completes which number sentence?

A. 13 8 = 5

B. 4 5 = 9

C. 90 3 = 30

D. 5 8 = 13


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11. Lulu has 18 goldfish. She wants to get enough bowls to put 6 fish in each bowl. Lulu drew the picture below

to find out how many bowls she will need.

Which number sentence shows what Lulu did?

A. 18 6 = 3

B. 18 6 = 12

C. 18 9 = 2

D. 18 3 = 15

12.

Use the number sentence below to answer this question.

342 = + 2

Which number belongs in the box?

A. 34

B. 40

C. 300

D. 340

13. Which of the following is the BEST way to estimate:

27 + 53 + 98 ?

A. 20+50+ 90

B. 20+50+ 100

C. 30+50+ 100

D. 30+60+ 100

14. Subtract.

A. 15

B. 25

C. 27

D. 67


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15.

Kenny wants to buy 3 packs of baseball cards. Each pack costs $2.89. About how much money does Kenny need?

A. $3

B. $6

C. $9D. $12

16. Katie has a pile of 63 straws. She is placing rubber bands around bundles of 10 straws. How many rubber

bands will she need?

A. 1

B. 6

C. 10

D. 60

17. Small bottles of juice come in packs of 9 bottles. How many bottles could you buy if you bought only

COMPLETE packs?

A. 12

B. 16

C. 26

D. 36

18. The 21 students will be divided up into groups. Each of the 7 adults will have the same number of students in a

group. How many students will be in each group?

A. 2

B. 3

C. 4

D. 5

19. Which of the following is the same as 4 4?

A. 4 + 4 4 + 4

B. 4 + 4 4 4

C. 4 + 4 + 4 + 4

D. 4 4 4 4

20. Which number would you say when you count by 3 AND when you count by 4?

A. 7

B. 15

C. 24

D. 28


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Answer Key

1. B) $4.00

2. D) 9 + 9 + 9

3. C) 15 - 7 = 8

4. B)

5. C) 2 4 = 4 2

6. D) 0

7. D) 4 12

8. C) 20

9. D) 520

10. A) 13 8 = 5

11. A) 18 6 = 3

12. D) 340

13. C) 30+50+ 100

14. B) 25

15. C) $9

16. B) 6

17. D) 36

18. B) 3

19. C) 4 + 4 + 4 + 4

20. C) 24


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Third Grade Computation and Estimation