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17 subtopics ready
CoreX • Extended Maths
Numbers
Subtopics
Choose a subtopic and continue practicing with focused exam-style questions.
🔢
Types of Numbers
Practice questions
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Natural numbers, integers, primes, squares, cubes, rational and irrational numbers.
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✨
Sets & Venn Diagrams
Practice questions
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Set notation, subsets, complements and Venn diagram applications.
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Indices, Powers & Roots
Practice questions
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Index laws, roots, powers and standard exam-style simplification.
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➗
Fractions, Decimals & Percentages
Practice questions
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Conversions and calculations in real-life contexts.
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⚖️
The Four Operations
Practice questions
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Addition, subtraction, multiplication, division and BIDMAS.
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Standard Form
Practice questions
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Writing very large and very small numbers in standard form.
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Estimation
Practice questions
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Estimating values and checking if answers are reasonable.
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Limits of Accuracy
Practice questions
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Bounds and measurement accuracy for rounded values.
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⚖️
Ratio & Proportion
Practice questions
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Ratios, sharing, direct proportion and proportional reasoning.
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⏱️
Rates
Practice questions
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Speed, density and other everyday rates.
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➗
Percentages
Practice questions
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Percentage increase, decrease, profit, loss and reverse percentages.
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⏱️
Time
Practice questions
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Time intervals, timetables and clock calculations.
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Money
Practice questions
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Currency exchange and money-based calculations.
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Exponential Growth & Decay
Practice questions
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Growth and decay in finance and real-life change.
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√
Surds
Practice questions
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Simplifying and manipulating irrational roots.
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Bounds
Practice questions
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Upper and lower bounds in calculations and intervals.
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Interests
Practice questions
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Simple and compound interest calculations.
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