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Classify numbers as rational or irrational

8th grade (Year 9 in England) Β· 16 questions Β· Common Core: 8.NS.A.1 Β· England: KS3 Number, GCSE Foundation Number

Name

Date

Score/ 16

  1. Question 1

    Is √70 rational or irrational?

    • A. Rational
    • B. Irrational

  2. Question 2

    Which number is irrational?

    • A. βˆ’5
    • B. 1.010010001…
    • C. √16
    • D. 0.25

  3. Question 3

    Is √50 rational or irrational?

    • A. Rational
    • B. Irrational

  4. Question 4

    Is √57 rational or irrational?

    • A. Rational
    • B. Irrational

  5. Question 5

    Which number is irrational?

    • A. 0.333…
    • B. 0.25
    • C. Ο€
    • D. βˆ’5

  6. Question 6

    Is βˆ’5 rational or irrational?

    • A. Rational
    • B. Irrational

  7. Question 7

    Is √9 rational or irrational?

    • A. Rational
    • B. Irrational

  8. Question 8

    Which number is irrational?

    • A. 3/7
    • B. √0.09
    • C. Ο€
    • D. 0.25

  9. Question 9

    Is βˆ›5 rational or irrational?

    • A. Rational
    • B. Irrational

  10. Question 10

    Is √43 rational or irrational?

    • A. Rational
    • B. Irrational

  11. Question 11

    Which number is irrational?

    • A. 0.333…
    • B. √10
    • C. 3/7
    • D. √16

  12. Question 12

    Is √2 rational or irrational?

    • A. Rational
    • B. Irrational

  13. Question 13

    Is √26 rational or irrational?

    • A. Rational
    • B. Irrational

  14. Question 14

    Which number is irrational?

    • A. 0.333…
    • B. √16
    • C. 3/7
    • D. βˆ›5

  15. Question 15

    Is 0.25 rational or irrational?

    • A. Rational
    • B. Irrational

  16. Question 16

    Is √72 rational or irrational?

    • A. Rational
    • B. Irrational

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Answer key: Classify numbers as rational or irrational

  1. 1. B. Irrational

  2. 2. B. 1.010010001…

  3. 3. B. Irrational

  4. 4. B. Irrational

  5. 5. C. Ο€

  6. 6. A. Rational

  7. 7. A. Rational

  8. 8. C. Ο€

  9. 9. B. Irrational

  10. 10. B. Irrational

  11. 11. B. √10

  12. 12. B. Irrational

  13. 13. B. Irrational

  14. 14. D. βˆ›5

  15. 15. A. Rational

  16. 16. B. Irrational