Rational or irrational Quiz
10 questions · easy to harder · Foundations · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 10 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. No calculator: work it out on paper.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Is −5 rational or irrational- A) Rational
- B) Irrational
2 Question 2
Is 79 rational or irrational- A) Rational
- B) Irrational
3 Question 3
Is 0.75 rational or irrational- A) Rational
- B) Irrational
4 Question 4
Is √49 rational or irrational- A) Rational
- B) Irrational
5 Question 5
Is √64 rational or irrational- A) Rational
- B) Irrational
6 Question 6
Is 0.333... rational or irrational- A) Rational
- B) Irrational
7 Question 7
Is 2.125 rational or irrational- A) Rational
- B) Irrational
8 Question 8
Is √81 rational or irrational- A) Rational
- B) Irrational
9 Question 9
Is 0.454545... rational or irrational- A) Rational
- B) Irrational
10 Question 10
Is √50 rational or irrational- A) Rational
- B) Irrational