← Back
17 subtopics ready
CoreX • Extended Maths

Numbers Subtopics

Choose a subtopic and continue practicing with focused exam-style questions.
🔢

Types of Numbers

Practice questions
Natural numbers, integers, primes, squares, cubes, rational and irrational numbers.

Sets & Venn Diagrams

Practice questions
Set notation, subsets, complements and Venn diagram applications.
🔢

Indices, Powers & Roots

Practice questions
Index laws, roots, powers and standard exam-style simplification.

Fractions, Decimals & Percentages

Practice questions
Conversions and calculations in real-life contexts.
⚖️

The Four Operations

Practice questions
Addition, subtraction, multiplication, division and BIDMAS.
🔢

Standard Form

Practice questions
Writing very large and very small numbers in standard form.
📘

Estimation

Practice questions
Estimating values and checking if answers are reasonable.
📘

Limits of Accuracy

Practice questions
Bounds and measurement accuracy for rounded values.
⚖️

Ratio & Proportion

Practice questions
Ratios, sharing, direct proportion and proportional reasoning.
⏱️

Rates

Practice questions
Speed, density and other everyday rates.

Percentages

Practice questions
Percentage increase, decrease, profit, loss and reverse percentages.
⏱️

Time

Practice questions
Time intervals, timetables and clock calculations.
💰

Money

Practice questions
Currency exchange and money-based calculations.
📘

Exponential Growth & Decay

Practice questions
Growth and decay in finance and real-life change.

Surds

Practice questions
Simplifying and manipulating irrational roots.
📘

Bounds

Practice questions
Upper and lower bounds in calculations and intervals.
💰

Interests

Practice questions
Simple and compound interest calculations.