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Make a sensible estimate

1st grade (Year 2 in England) · 16 questions · Common Core: 1.NBT.A.1 · England: Y2 Number and place value

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  1. Question 1

    Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆

    • A. about 10
    • B. about 5
    • C. about 100
    • D. about 50

  2. Question 2

    Which is the most sensible estimate for the number of crayons in a box?

    • A. 120
    • B. 1200
    • C. 12
    • D. 1

  3. Question 3

    Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆

    • A. about 10
    • B. about 5
    • C. about 20
    • D. about 100

  4. Question 4

    Which is the most sensible estimate for the number of steps to walk across a classroom?

    • A. 1
    • B. 10
    • C. 1000
    • D. 100

  5. Question 5

    Without counting one by one, which is the best estimate for the number of hearts? ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥ ♥

    • A. about 10
    • B. about 20
    • C. about 100
    • D. about 50

  6. Question 6

    Which is the most sensible estimate for the number of crayons in a box?

    • A. 1200
    • B. 120
    • C. 1
    • D. 12

  7. Question 7

    Without counting one by one, which is the best estimate for the number of squares? ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

    • A. about 50
    • B. about 20
    • C. about 5
    • D. about 100

  8. Question 8

    Which is the most sensible estimate for the number of steps to walk across a classroom?

    • A. 1000
    • B. 100
    • C. 1
    • D. 10

  9. Question 9

    Without counting one by one, which is the best estimate for the number of diamonds? ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆

    • A. about 10
    • B. about 20
    • C. about 100
    • D. about 50

  10. Question 10

    Which is the most sensible estimate for the number of apples in a small bag?

    • A. 6
    • B. 600
    • C. 60
    • D. 1

  11. Question 11

    Without counting one by one, which is the best estimate for the number of stars? ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★

    • A. about 10
    • B. about 50
    • C. about 20
    • D. about 100

  12. Question 12

    Which is the most sensible estimate for the number of steps to walk across a classroom?

    • A. 10
    • B. 1
    • C. 1000
    • D. 100

  13. Question 13

    Without counting one by one, which is the best estimate for the number of stars? ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★

    • A. about 5
    • B. about 50
    • C. about 20
    • D. about 10

  14. Question 14

    Which is the most sensible estimate for the number of crayons in a box?

    • A. 1200
    • B. 120
    • C. 12
    • D. 1

  15. Question 15

    Without counting one by one, which is the best estimate for the number of squares? ■ ■ ■ ■ ■ ■ ■ ■

    • A. about 20
    • B. about 5
    • C. about 10
    • D. about 50

  16. Question 16

    Which is the most sensible estimate for the number of seats on a school bus?

    • A. 500
    • B. 5000
    • C. 50
    • D. 5

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Answer key: Make a sensible estimate

  1. 1. A. about 10

  2. 2. C. 12

  3. 3. A. about 10

  4. 4. B. 10

  5. 5. A. about 10

  6. 6. D. 12

  7. 7. A. about 50

  8. 8. D. 10

  9. 9. B. about 20

  10. 10. A. 6

  11. 11. B. about 50

  12. 12. A. 10

  13. 13. B. about 50

  14. 14. C. 12

  15. 15. C. about 10

  16. 16. C. 50