BODMAS and types of number
It's important to know about different types of numbers for the exam.
- Integers are whole numbers, either positive or negative. 0 is also an integer
- Rational numbers can be written as fractions, but irrational numbers can't - instead, they're never-ending, non-repeating decimals
- Surds are numbers / expressions containing irrational roots
BODMAS is an important acroynym to learn. It tells you the order in which to perform operations within an equation. It stands for:
- Brackets
- Other
- Division
- Multiplication
- Addition
- Subtraction