# 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 $\scriptsize \displaystyle \frac{a}{b}; a, b \in \mathbb{Z}, b\neq0$.
• 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.