Simplification and approximation
BODMAS, fractions, decimals, squares, cubes and roots.
BODMAS
Brackets, Orders (powers and roots), Division and Multiplication (left to right), Addition and Subtraction (left to right).
Tips
- Learn squares up to 30 and cubes up to 15.
- Convert common fractions to percentages (1/8 = 12.5%).
- For approximation, round numbers sensibly and estimate.
Practice questions
Log in to answer these questions and see the explanations.Create free accountLog in