Pearson Edexcel GCSE Maths revision notes
Work through the full GCSE Maths course with clear topic guides, memory tricks, worked methods, and practice prompts.
Number
11 topic guides
Calculations and order of operations
Use the four operations confidently and apply BIDMAS correctly.
Integers, decimals and place value
Read, compare, order and calculate with integers and decimals.
Fractions
Simplify, compare and calculate with fractions.
Converting decimals, fractions and percentages
Move confidently between equivalent forms.
Percentages
Convert percentages and solve percentage change problems.
Factors, multiples and primes
Use prime factors, HCF and LCM to solve number problems.
Index laws and roots
Calculate with powers, roots and index rules.
Standard form
Write and calculate with very large or very small numbers.
Surds
Simplify and calculate with exact irrational values.
Recurring decimals as fractions
Convert recurring decimals into exact fractions.
Bounds, estimation and error intervals
Estimate answers and use limits of accuracy.
Algebra
22 topic guides
Algebraic notation and substitution
Use letters for unknown values and substitute accurately.
Simplifying expressions
Collect like terms and simplify algebraic expressions.
Expanding and factorising
Expand brackets and reverse the process by factorising.
Linear equations
Solve equations by keeping both sides balanced.
Linear inequalities
Solve and represent inequalities on number lines.
Quadratic inequalities
Find ranges of values that satisfy a quadratic inequality.
Linear sequences
Find patterns, nth terms and missing values.
Quadratic and geometric sequences
Recognise and continue more complex patterns.
Straight-line graphs
Use gradients, intercepts and equations of lines.
Quadratic graphs
Plot and interpret curved quadratic graphs.
Cubic, reciprocal and exponential graphs
Recognise and interpret common graph shapes.
Real-life graphs
Interpret distance-time and other graphs in context.
Gradients and area under graphs
Use graph shape to estimate rates and quantities.
Solving quadratics by factorising
Turn a quadratic into brackets and find both solutions.
Quadratic formula and completing the square
Solve quadratics that do not factorise easily.
Simultaneous equations
Find values that satisfy two equations at the same time.
Linear and quadratic simultaneous equations
Solve linked equations when one relationship is curved.
Changing the subject of a formula
Rearrange formulae to isolate a chosen letter.
Algebraic fractions
Simplify and calculate with fractions containing algebra.
Functions
Use function notation, mappings and inverse operations.
Iteration
Use repeated calculations to approximate solutions.
Algebraic proof
Use algebra to show that a statement is always true.
Ratio, proportion and rates of change
8 topic guides
Ratio and sharing
Simplify ratios and divide amounts into given parts.
Fractions and ratios
Connect ratios, fractions and proportions.
Direct and inverse proportion
Recognise and solve relationships between changing quantities.
Percentage change
Calculate percentage increases, decreases and reverse percentages.
Speed, distance and time
Use rate formulae and convert units correctly.
Compound measures
Work with density, pressure and other rates.
Growth and decay
Model repeated percentage change, including compound interest.
Scale drawings and maps
Use scales to connect drawings and real measurements.
Geometry and measures
18 topic guides
Angles, lines and polygons
Use angle facts in lines, triangles and polygons.
Properties of shapes
Recognise and reason with 2D and 3D shapes.
Perimeter, area and volume
Calculate measurements for common shapes and solids.
Circles
Use radius, diameter, circumference and area.
Transformations
Describe reflections, rotations, translations and enlargements.
Congruence and similarity
Use matching shapes and scale factors.
Pythagoras' theorem
Find missing lengths in right-angled triangles.
Right-angled trigonometry
Use sine, cosine and tangent to find angles and lengths.
Sine rule, cosine rule and triangle area
Solve non-right-angled triangles.
Bearings
Measure and solve three-figure bearing problems.
Plans and elevations
Interpret and draw views of three-dimensional shapes.
Units and measure conversions
Convert lengths, areas, volumes and compound units.
Arc length and sector area
Calculate parts of circles accurately.
Surface area and volume
Calculate measurements for prisms and curved solids.
Vectors
Describe movement and solve geometric vector problems.
Circle theorems
Use angle rules inside circles.
Geometric proof
Build logical arguments using geometric facts.
Constructions and loci
Draw accurate constructions and regions.
Probability
6 topic guides
Probability basics
Describe chance on a scale from impossible to certain.
Relative frequency
Estimate probabilities using experimental results.
Sample spaces and frequency trees
List outcomes clearly and calculate probabilities.
Venn diagrams and set notation
Organise overlapping groups and calculate probabilities.
Tree diagrams
Follow branches to solve combined probability problems.
Conditional probability
Calculate probability when outcomes depend on earlier information.
Statistics
8 topic guides
Collecting and sampling data
Choose fair methods for gathering useful data.
Averages and range
Calculate and compare mean, median, mode and range.
Grouped data and estimated mean
Estimate averages from grouped frequency tables.
Charts, tables and diagrams
Read and create clear statistical displays.
Scatter graphs
Identify correlation and use lines of best fit.
Time series
Read patterns and trends over time.
Cumulative frequency and box plots
Compare distributions and estimate quartiles.
Histograms
Interpret frequency density and unequal class widths.
Start with one topic. Build confidence one method at a time.