← Lesson📄 Worksheet✅ Memo📝 Exam test🗝️ Marking guide
∑ DANEMATHICS
FREE CAPS MATHS RESOURCES
Grade 9 · Whole Numbers
The Real Number System: Rational & Irrational Numbers
WORKSHEET
Name: 
Class: 
Date: 
Mark
  / 14

Answer all questions. Show all your working — marks are awarded for method as well as the final answer.

  1. 1
    List the natural numbers less than 5.
    (1)
  2. 2
    What is the only whole number that is not a natural number?
    (1)
  3. 3
    Is −7 an integer? Is it a natural number?
    (2)
  4. 4
    Define a rational number.
    (2)
  5. 5
    Is √36 rational or irrational? Why?
    (2)
  6. 6
    Is √20 rational or irrational? Why?
    (2)
  7. 7
    Is 0,45 rational?
    (1)
  8. 8
    Is 0,666… rational?
    (1)
  9. 9
    Name two irrational numbers.
    (2)
TOTAL: 14 marks
© Danemathics — free to print and share for classroom use.danemathics.com

Printing this sheet

  1. In the print dialog open More settings and untick “Headers and footers” — that is what prints the date, time and web address in the margin.
  2. Leave Pages per sheet on 1 so learners keep the full writing space.
  3. Choose Save as PDF as the destination to download it instead of printing.