Which real numbers are irrational
Mathematics · Grade 11 · about 40 minutes
Sort a set of real numbers into rational and irrational, and see why the square root of 2 cannot be a fraction.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Which real numbers are irrational
- Simplifying surds
- Adding and subtracting surds
- Multiplying surds
- Rationalising a single root
- Conjugates
- Mixed surd arithmetic
- Exact lengths and exact areas