Eduqas GCSE Mathematics

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Number

Factors and fractions

FN4, HN4 - Factors and prime numbersFind factors and multiples systematically, and use factors to distinguish prime and composite numbers. You will break a whole number into prime factors and see why different routes lead to the same prime product.
FN4, HN4 - Highest common factors and lowest common multiplesFind the highest common factor and lowest common multiple using lists and prime factors. You will explain why the two methods use different prime powers, and decide which one solves a grouping or repeating-cycle problem.
FN1–FN3, FN10, HN1–HN3, HN10 - Equivalent fractions and number orderUse equal scaling to recognise and simplify equivalent fractions. You will convert between improper fractions and mixed numbers, locate signed fractions on a number line, and compare fractions using common denominators or exact decimals.
FN2, FN8, HN2, HN8 - Adding and subtracting fractionsLearn to add and subtract fractions by counting equal-sized parts of the same whole. You will calculate exactly with proper fractions, improper fractions and mixed numbers, then apply the same ideas to negative values. This develops the fraction arithmetic in FN2 and HN2 and the exact calculation...
FN2–FN3, FN8, FN12, HN2–HN3, HN8, HN12 - Multiplying and dividing fractionsCan multiplying make a number smaller, and dividing make it larger? Learn to use fractions as operators, multiply signed fractions and mixed numbers, and explain division using reciprocals. This develops FN12 and HN12 on fraction operators, with the fraction operations, cancellation and exact cal...

Decimals and accuracy

FN2–FN3, HN2–HN3 - Calculating with decimalsWhy is 4.62÷0.06 larger than 4.62÷0.6? Learn to calculate with decimal place values, scale multiplication and division correctly, and check signed answers using their size and inverse operations. This develops decimal arithmetic in FN2 and HN2, with the inverse-operation reasoning i...
FN10, HN10 - Fractions and terminating decimalsFractions and decimals can name exactly the same number. Learn to convert decimal place values into simplified fractions, use written division to find terminating decimals, and choose a convenient exact form for comparisons and calculations. This covers the terminating-decimal content shared by F...
FN14–FN15, HN14–HN15 - Rounding and estimationLearn to round numbers without losing their place value, and to estimate calculations before trusting a calculator display. FN15 and HN15 cover decimal places and significant figures; FN14 and HN14 use those ideas to judge whether an answer has a sensible size.
FN15–FN16, HN15–HN16 - Accuracy and error intervalsA rounded measurement describes a range of possible values, rather than one exact value. Learn to write those ranges with inequalities, distinguish rounding from truncation, and report accuracy honestly. FN15 and HN15 supply the interval notation; FN16 and HN16 explain what the limits mean for a...
FN13, FR1, FG12, HN13, HR1, HG14 - Units and conversionsConvert everyday measures while keeping the quantity unchanged, calculate time across clock boundaries, and explain why area and volume need different conversion factors from length. FN13, HN13, FG12 and HG14 cover the standard measures; FR1 and HR1 connect their units, including squared and cube...

Algebra

Expressions and formulae

FA1, FA3, FA17, HA1, HA3, HA21 - Writing algebraic expressionsAlgebra describes a calculation before you know the numbers. Learn to read its compact notation, distinguish expressions from mathematical statements, and write expressions and formulae from words. FA1 and HA1 supply the notation, FA3 and HA3 its vocabulary, and FA17 and HA21 connect it to situat...
FA2, FA5, HA2, HA5 - Substituting into formulaeOne formula can describe many different rectangles, journeys or experiments. Learn to replace its letters with values, keep negative signs and powers in the right places, and interpret the result with suitable units. FA2 and HA2 cover substitution, including scientific formulae; FA5 and HA5 contr...
FA4, HA4 - Collecting terms and expanding bracketsDifferent expressions can describe exactly the same calculation. Learn to collect like terms, multiply a single term over brackets, and combine these methods while keeping every sign. These are the collecting and single-bracket skills in FA4 and HA4.
FA4, HA4 - Taking out common factorsExpanding turns a product into a sum; factorising reverses that process. Learn to find common numerical and algebraic factors, take out the greatest common factor, and check whether your factorisation is complete. This teaches the common-factor method in FA4 and HA4.
FA4, HA4 - Exact expressions with rootsA square root can stay exact while you rearrange an expression around it. Learn to collect matching root terms, expand brackets containing roots, and take out common factors. These FA4 and HA4 methods use roots already given in the question, just as earlier algebra used letters.
FA4, HA4 - Simplifying powers in algebraThe index laws count equal factors whether the base is a number or a letter. Learn to simplify products, quotients and powers of algebraic terms, then distinguish those calculations from adding like terms. This develops the sums, products, powers and index-law scope within FA4 and HA4.

Quadratics and curves

FA4, HA4 - Expanding two bracketsLearn to multiply two brackets, explain why a middle term sometimes disappears, and check an expansion before trusting it. This develops the two-binomial expansion skills in FA4 and HA4 and prepares you to reverse the process when factorising.
FA4, HA4 - Factorising quadratic expressionsLearn to turn a quadratic expression into a product of brackets by reversing expansion. This develops the monic quadratic and difference-of-squares factorisation in FA4 and HA4, including choosing signs and taking a common factor first.
FA15, HA18 - Solving quadratics by factorisingLearn why a product equal to zero gives separate equations, how to find every solution of a factorisable quadratic, and how to check the roots. This develops FA15 and HA18 using monic quadratics already written equal to zero; the factorisation makes their solutions visible.
FA11–FA12, FA15, HA11–HA12, HA18 - Quadratic graphs and rootsHow can a curve reveal two answers to one equation? FA12 and HA12 cover drawing quadratic graphs; FA11 and HA11 connect their roots, intercepts and turning points. Use the graphical parts of FA15 and HA18 to estimate solutions from crossings.
FA12, HA12 - Cubic and reciprocal graphsWhy does one curve pass through the origin while another approaches both axes without touching them? FA12 and HA12 cover recognising, sketching and interpreting simple cubic functions and the reciprocal function. Use calculated points, signs and allowed inputs to distinguish their shapes.
FA13, HA14 - Graphs in real situationsA horizontal travel graph can represent a long stop, while a steep graph can represent fast movement. FA13 and HA14 connect graphs, including reciprocal and non-standard models, to quantities such as distance, time and speed. Read approximate solutions with units and use the supplied constant-acc...

Algebraic forms

HA4 - More demanding factorisationHow can you factorise a quadratic when its first term is 6x² rather than x²? Extend the HA4 algebra methods to nonmonic quadratics, products of three or more brackets and surd coefficients. Use expansion to check that every rewritten expression is identical to the original.
HA4, HA11, HA18 - Completing the squareCan you find a quadratic's lowest value without trying a long list of inputs? HA4 rewrites quadratics as a square plus a constant. HA11 uses that form to locate turning points, and HA18 uses it to solve quadratic equations exactly or approximately.
HA18 - Solving general quadratic equationsA quadratic may have awkward coefficients, irrational roots or a root that makes no sense in its context. HA18 covers rearranging before solving, using the supplied quadratic formula, and choosing between factorisation, completing the square and the formula. Keep exact roots until a decimal answe...
HA4 - Algebraic fractionsCan cancelling a factor make a forbidden input allowed? HA4 uses factorisation and fraction arithmetic to simplify algebraic fractions, multiply or divide them, and combine sums or differences. Keep the original restrictions alongside the simplified expression so that it represents the same allow...
FA6, HA6 - Identities and algebraic argumentsLearn the difference between an equation and an identity, and use equivalent expressions to explain why a calculation works for every input. This develops FA6 and HA6 through expansion, reverse expansion and short algebraic arguments about proposed rules.

Higher functions and equations

HA6 - Proof with algebraLearn to represent arbitrary integers and construct algebraic proofs about odd, even and divisible numbers. This develops the general proofs in HA6, including stating why a factor proves divisibility and using a counterexample to reject a false universal claim.
HA7 - Composite and inverse functionsDoes “square, then subtract” give the same result as “subtract, then square”? HA7 names input-output rules, combines them in a stated order, and reverses rules when each output identifies exactly one allowed input.
HA19 - Linear and quadratic simultaneous equationsCan a line and a curve have more than one common point? HA19 uses substitution to find all coordinate pairs that satisfy a linear and a quadratic equation together, then explains what those pairs mean on a graph.
HA20 - Numerical solutions and iterationHow can you find a root accurately when an equation has no convenient factorisation? HA20 uses systematic trials, decimal searches, bisection and iterative rules to obtain numerical solutions. Keep enough precision, check the equation and distinguish evidence of convergence from a guarantee.
HA22 - Quadratic and graphical inequalitiesAn equation may give just two boundary values. An inequality can ask for every value between them, outside them, or throughout a region. HA22 uses signs and graphs to identify the complete solution set, including whether its boundaries belong.
HA23–HA25 - Quadratic and geometric sequence rulesThe gaps in a sequence may change regularly even when the terms do not. How can that reveal a formula for a distant term? HA23–HA25 connects second differences to quadratic rules, checks every coefficient, and extends geometric patterns to exact surd ratios.

Ratio and proportion

Geometry and measures

Higher graphs

Probability

Statistics