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      • How Many Gifts Do I Get Over the Twelve Days of Christmas?
      • How to Find the Sum of a Geometric Sequence
    • A-Level Maths Paper Walkthroughs >
      • A-Level Maths, Edexcel, June 2018, Paper Walkthroughs >
        • A-Level Maths, June 2018, Pure Paper 1 Question Walkthroughs
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        • A-Level Maths, June 2018, Statistics and Mechanics, Question Walkthroughs
      • A-Level Maths, Edexcel, June 2019, Paper Walkthroughs >
        • A-Level Maths, June 2019, Pure Paper 1, Question Walkthroughs
        • A-Level Maths, June 2019, Pure Paper 2, Question Walkthrough
        • A-Level Maths, June 2019, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, October 2020, Paper Walkthroughs >
        • A-Level Maths, October 2020, Pure Mathematics Paper 1, Question Walkthroughs
        • A-Level Maths, October 2020, Pure Mathematics Paper 2, Question Walkthroughs
        • A-Level Maths, October 2020, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, October 2021, Paper Walkthroughs >
        • A-Level Maths, October 2021, Pure Mathematics, Paper 1 Walkthroughs
        • A-Level Maths, October 2021, Pure Mathematics Paper 2 Walkthroughs
        • A-Level Maths, October 2021, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, June 2022, Paper 1 Walkthroughs
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Maths articles

Find out more about various aspects of maths with these DoingMaths articles covering a mixture of how-to, maths knowledge and maths history.
How Many Gifts Do I Get Over the Twelve Days of Christmas?
Find out how many gifts you get in total over the 12 days of Christmas according to the popular Christmas carol.

Five of History's Most Influential Women in STEM

An article all about five women (Hypatia, Florence Nightingale, Katherine Johnson, Sophie Germain and Ada Lovelace) who made enormous contributions to the fields of science, technology, engineering and mathematics. Find out more about these amazing women, their lives and how their work still affects us today.

Rice on a Chessboard
My most popular article on Hubpages. Learn about the problem faced by a king who promised a stranger 1 grain of rice on the first square of a chessboard, 2 grains on the second, 4 grains on the third and so on...

How Long Will it Take My Money to Double? - The Rule of 72
A Hubpages article about the rule of 72 and how this applies to money doubling.

The Monty Hall Problem
A Hubpages article all about the Monty Hall problem (the gameshow with the goats and the car) and why probability isn't always all it seems.
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  • Home
  • Algebra
    • Algebraic expressions
    • Algebraic equations
    • Expanding brackets
    • Index notation
    • Inequalities
    • Quadratic equations
    • Sequences
    • Simultaneous equations
    • Straight line graphs
    • Substitution
  • Shapes, space and measures
    • Angles
    • Circles
    • Circle theorems
    • Compound measures
    • Construction
    • Distance/speed-time graphs
    • Length, area and volume
    • Metric and Imperial conversions
    • Metric units of measurement
    • Proof
    • Pythagoras' Theorem
    • Scale factors, similarity and congruence
    • Symmetry and reflection
    • Time
    • Trigonometry
  • Number
    • Primary Addition and Subtraction
    • Addition and subtraction
    • Basic number work
    • BODMAS/PEMDAS/BIDMAS
    • Compound percentage change
    • Decimals
    • Factors and Multiples
    • Fractions
    • Fractions, decimals and percentages
    • Money
    • Multiplication and division
    • Percentages
    • Ratio and Proportion
    • Rounding and estimating
    • Standard form
  • Statistics and Probability
    • Averages and the Range
    • Box plots
    • Collecting data
    • Pie charts
    • Probability
  • More
    • Starters >
      • Puzzles and riddles
      • Maths Wordsearches
      • More Maths Lesson Starter Ideas
    • Christmas Maths Activities
    • Maths Articles >
      • How Many Gifts Do I Get Over the Twelve Days of Christmas?
      • How to Find the Sum of a Geometric Sequence
    • A-Level Maths Paper Walkthroughs >
      • A-Level Maths, Edexcel, June 2018, Paper Walkthroughs >
        • A-Level Maths, June 2018, Pure Paper 1 Question Walkthroughs
        • A-Level Maths, June 2018, Pure Paper 2, Question Walkthroughs
        • A-Level Maths, June 2018, Statistics and Mechanics, Question Walkthroughs
      • A-Level Maths, Edexcel, June 2019, Paper Walkthroughs >
        • A-Level Maths, June 2019, Pure Paper 1, Question Walkthroughs
        • A-Level Maths, June 2019, Pure Paper 2, Question Walkthrough
        • A-Level Maths, June 2019, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, October 2020, Paper Walkthroughs >
        • A-Level Maths, October 2020, Pure Mathematics Paper 1, Question Walkthroughs
        • A-Level Maths, October 2020, Pure Mathematics Paper 2, Question Walkthroughs
        • A-Level Maths, October 2020, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, October 2021, Paper Walkthroughs >
        • A-Level Maths, October 2021, Pure Mathematics, Paper 1 Walkthroughs
        • A-Level Maths, October 2021, Pure Mathematics Paper 2 Walkthroughs
        • A-Level Maths, October 2021, Statistics and Mechanics, Walkthrough answers
      • A-Level Maths, Edexcel, June 2022, Paper 1 Walkthroughs
    • Mathematician of the Month
    • Tricky Geometry Problems
    • DoingMaths video channel
    • DoingMaths Shop
    • Contact us
    • Privacy policy