# Numbers: Numbers and number relationships

### Subject outcome 1.2

Demonstrate an understanding of numbers and relationships among numbers and number systems and represent numbers in different ways.

### Learning outcomes

- Identify rational numbers and convert between terminating and recurring decimals like [latex]\scriptsize \displaystyle \frac{a}{b}; a, b \in \mathbb{Z}, b\neq0[/latex].
- Round off rational and irrational numbers to an appropriate degree of accuracy.

Apply the laws of exponents. - Rationalise fractions with surd denominators.
- Add, subtract, multiply, and divide simple surds.
- Identify and work with arithmetic progressions, sequences and series.