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Rational and irrational numbers

8th grade (Year 9 in England) · 16 questions · Common Core: 8.NS.A.1, 8.NS.A.2 · England: GCSE Higher Number

Name

Date

Score/ 16

1
Question 1
Is 0.121212… (repeating) rational or irrational?
- A. Rational
- B. Irrational
2
Question 2
Which of these numbers is irrational: 2√3 ; 3/7 ; √16 ; 0.75?
- A. √16
- B. 2√3
- C. 3/7
- D. 0.75
3
Question 3
Is −√81 rational or irrational?
- A. Rational
- B. Irrational
4
Question 4
Which of these numbers is irrational: √3 ; √16 ; −8 ; 0.75?
- A. √3
- B. √16
- C. −8
- D. 0.75
5
Question 5
Is 5/9 rational or irrational?
- A. Rational
- B. Irrational
6
Question 6
Which of these numbers is irrational: √16 ; √(9/4) ; π ; 0.75?
- A. √(9/4)
- B. 0.75
- C. √16
- D. π
7
Question 7
Is √36 rational or irrational?
- A. Rational
- B. Irrational
8
Question 8
Which of these numbers is irrational: 0.75 ; √3 ; √16 ; √49?
- A. √49
- B. 0.75
- C. √16
- D. √3
9
Question 9
Is 5/9 rational or irrational?
- A. Rational
- B. Irrational
10
Question 10
Which of these numbers is irrational: 22/7 ; √(9/4) ; √5 ; 0.75?
- A. √(9/4)
- B. 22/7
- C. √5
- D. 0.75
11
Question 11
Is √50 rational or irrational?
- A. Rational
- B. Irrational
12
Question 12
Which of these numbers is irrational: √(9/4) ; 0.333… (repeating) ; 3/7 ; √5?
- A. 3/7
- B. 0.333… (repeating)
- C. √(9/4)
- D. √5
13
Question 13
Is 5/9 rational or irrational?
- A. Rational
- B. Irrational
14
Question 14
Which of these numbers is irrational: 22/7 ; 2√3 ; −8 ; √49?
- A. −8
- B. 22/7
- C. 2√3
- D. √49
15
Question 15
Is √36 rational or irrational?
- A. Rational
- B. Irrational
16
Question 16
Which of these numbers is irrational: π ; 1.25 ; √(9/4) ; √16?
- A. √16
- B. π
- C. 1.25
- D. √(9/4)

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