The titles of the MM books are abbreviated as follows:
 
AZ Indexa b c d e f g h i k l m n o p q r s t u v w y z0.99999... : Why does 0.99999... = 1? 3.1415... : KEY 174178, PSAUS 15, 150152,
9: KEY 151163 11: Can I divide the world into football teams? EQEA 14, When will a number divide by 11? 13: fear of KEY 7889 37: KEY 37 1089: MM1 7880, 1089 times table EQEA 1516, 1089 4 4's: Sunny's 4x4 Challenge Abacus: MM1 3334 Acceleration: PSAUS 4654 Accuracy: measurement DMEAS 27 Activities: see our Teacher Resources page Addition: SOS 2234, AWAR 1931 Algebra: PHX (entire book), card trick MM1 116124 Alternate Segment: The Alternate Segment Theorem & Proof Amicable numbers: KEY 148150 Angles: ASAS 1623, DMEAS 115126, MM1 7378, opposite, corresponding SAVSH 1617, very small FANG 138158 Angstrom: DMEAS 21 Annulus: formula PSAUS 163165, The area of an ANULUS Archimedes: BBB 2940, principle DMEAS 135144, MM1 10, DMEAS 150157, sphere formula PSAUS 167170 Arcsecond: FANG 138139 AREA: formulas PSAUS 10, 116142, measuring ASAS 7590, DMEAS 92110, Area calculator Articles: Stories from "The Week" that amused us, The Cicadas 17year Life Cycle, The AlGebra Movement, Cool Greek Maths Geeks Astonomical Unit (au): FANG 155 Averages: MANDV 124156 Babylonians: KEY 128 Base 8: KEY 126127 Bear Hunter Puzzle: SAVSH 6365, The Bear Hunter Puzzle Bearings and navigation: FANG 181196 Bell ringing: LUCKY 99103 Big numbers: MM1 130135, EQEA 119128 Binary: KEY 130133, code CODES 1824, Birthdays: BBB 115116, EQEA 100105, chances of sharing LUCKY 125128, What are the chances of 366 strangers all having different birthdays? Bisecting lines and angles: MM2 113119, lines SAVSH 2226, angles SAVSH 2627 Blue moon: EQEA 44 Brackets: PHX 2224, AWAR 167168 Buoyancy: DMEAS 146149 Cake: dividing fairly SAVSH 5160 Calculator: getting sin, cos, tan values FANG 7587, tricks MOM 1138 Calculators (online): Area calculator, LCD and HCF, Prime Number calculator, Time calculator, Quadratic calculator, The Factoriser Calculator. Calculus: A bit of Calculus!. There is an introduction and explanation in "Newton and His Falling Apple" by Kjartan Poskitt. differential calculus 5663, integral calculus 9294. Calendar: BBB 109116, EQEA 4957, Babylonian Julian Gregorian DMEAS 159, tricks MOM 5862, The Calendar Trick Cancelling fractions: MANDV 5663 Cards (playing cards): chances LUCKY 128136, chances MMoE 7577, tricks MOM 6399, algebra trick MM1 116124, The Chances of Card Hands, How many different ways can you put a pack of cards in order? Centred Hexagon Numbers: KEY 6062, PSAUS 19 Chance: LUCKY (whole book), MMoE 8184, The Chances of Card Hands, The National Lottery Odds Chaos Maths: Sierpinski's Triangle MMoE 80 Chess board curiosities: MMoE 78, 8587, chess and dominoes MM2 1423, How many squares on a chess board?, The Knight's Move Magic Square Chocolate bar: how many snaps to break EQEA 78 Chords (of circles): SAVSH 106113, PSAUS 155 Chunking: SOS 116117 Cicidas: MMoE 17, The Cicadas 17year Life Cycle CIRCLES: ASAS 4957, SAVSH 100120, PSAUS 152157, The Names of Bits of Circles Quiz, How to find the centre of a circle using a book, How to make a Circle into a Square Clock arithmetic: EQEA 3136 Clocks: MM1 6071 Codes: CODES (whole book) Cone: volume of cone, area of sloping side PSAUS 172 What is the volume of a cone? Coefficients: PHX 12, Pascal coefficients PHX 100107 Coin tossing: LUCKY 1823, 4043, 4460, 6366, 68, 7077, MMoE 7374 Coin Tricks/Problems: MOM 114132, DBB 5253, 82, The Coin Pyramid (Tower of Hanoi), The 6 Coin Circle Problem, The Twelve Coin Balance Problem (and solution) Combinations: LUCKY 78103, PSAUS 106108, The Unknown (Combinations) Formula Compass: bearings and navigation FANG 181196 Compasses: circles, bisecting lines and angles MM2 111119 Cone: PSAUS 172 Conversions: PSAUS 195, angles dms calculator button FANG 141 Conway calendar: EQEA 5657 Coordinates: PHX 128142 Cos: FANG 6768, 60º, 0º, 90º, 45º FANG 93, cosine formula FANG 119123 Crescent areas: PSAUS 158161 Cube (solid): formulas PSAUS 10, 143146, the 11 nets EQEA 81, The Magical SelfAssembling Cube! Cube (x^{3}): KEY 5760, curve on graphs PHX 142 Cyclic Quadrilateral: SAVSH 103105 Cycloid: MMoE 4547 Day of Week algorithm: PSAUS 95100 Decimal fractions: SOS 172178, MANDV 100111 Decimal point: SOS 160165, AWAR 163 Degree (angle measurement): ASAS 2021 Density: DMEAS 145146, PSAUS 201 Diagonals: PSAUS rectangle 10, 13, polygons 123, 124, cuboids 144, Diagonals of Polygons (with proof) Dice: LUCKY 2325, 104125, SAVSH 128133, MMoE 78, puzzle DBB 100102, The Devils Dice Puzzle Difference of two squares: KEY 5052, PHX 108110 Dimension 1D 2D 3D: MMoE 5051, MM2 3343, 3D Noughts and Crosses Game Divine Proportion (or Golden Ratio): KEY 2631, MMoE 5455 Division: SOS 104132, AWAR 107134 Dms: calculator button FANG 141 Dodecahedron: PSAUS 149, SAVSH 121, 127, 131, 135, make MOM 181186, Dodecahedron page Dominoes: BBB 5975, MM2 1323 Doubling the cube: MMoE 3335. Dragon Curve: MOM 157162 Drawing: triangles FANG 3845 e = 2.71828182845904523536... : KEY 178183, PSAUS 92, The Growth Formula and Elvis Impersonators Egg: how to draw MMoE 37 Egyptian fractions: MANDV 8687 Einstein, Albert: PSAUS 65, 69 Ellipses: ASAS 185201, SAVSH 137147, how to draw SAVSH 141143, formulas PSAUS 180182, The Area of an Ellipse and Volume of Ellipsoids Elvis Presley: 2043  The Year That We All Turn Into ELVIS! Equations: PHX 1945, quadratic PHX 5666, simultaneous PHX 147156, names of different types MM1 94, Equilateral triangle: SAVSH 31, how to draw with ruler and compasses SAVSH 74 how to fold from paper SAVSH 96 Eratosthenes: Sieve of Eratosthenes MMoE 14, Circumference of the Earth MMoE 37, Sieve of Eratosthenes Estimating: AWAR 153162 Euclid: BBB 2829 Euler: solids formula SAVSH 123, e,i,PI formula KEY 186 Exam tips: GCSE Slips and Tips (exam help) Expanding (brackets): PHX 4852 Factorial: AWAR 166167, LUCKY 7981 Factorising: algebra PHX 4852, into prime factors MANDV 4548, 5355, The Factoriser Calculator Facts (pathetic): KEY 916, 191192, The Most Pathetic Facts in Maths February 30th: EQEA 52 Fermat's Last Theorem: KEY 6670 Fibonacci: MMoE 5660, KEY 1741, Fibonacci trick KEY 4041, PHX 78, formula PSAUS 203, Fibonacci and Nature Finger Times Tables: KEY 119122, Finger Times Tables Fixed point theorem: MMoE 67 Flexagons: MOM 100113, How to make a Triflexagon video version, How to make Flexagons step by step version Four colour map theorem: MMoE 6869 Formulas: PSAUS whole book, EQEA 23 Fortune Telling with numbers: KEY 7176 Fractal: MOM 162 Fractions: SOS 141191, MANDV whole book, AWAR 112114, Friday 13th: EQEA 5556 Games: chances of various results in card and board games MMoE 8184 g Gravity: PSAUS 55, 63. For a lot more information on gravity and forces, see "Isaac Newton and His Apple" by Kjartan Poskitt 6985, 154157 Geometry set: FANG 1219, ASAS 2434 Giant peopleeating spider: why you can't get one EQEA 8690 Gigameter: DMEAS 48 Golden Ratio: KEY 2631, MMoE 5455 Golomb Rulers: MMoE 4849, How a Golomb Ruler can make you famous for ever Gradients (on graphs): PHX 134 Graham's number: EQEA 127 Graphs: x and y axis and how to plot for equations PHX 132143 HCF (Highest Common Factor): MANDV 52, LCD and HCF calculator Hemisphere: PSAUS 171 Hexagon: how to draw SAVSH 73, how to fold from paper SAVSH 97, tessalation SAVSH 85, Horizon: how far away? EQEA 3741 Hurricanes: Hurricane measurements, speed, strength and names Hypotenuse: FANG 60 i : KEY 183186, square root of i The Research Lab Icosahedron: PSAUS 149, SAVSH 121, 125, 127, 131 Illusion: MM2 43, The Football Team Illusion, Lil's Missing Card Illusion, Sam Loyd's Get Off The Earth Puzzle Akiyoshi Kitaoka's Distorted Squares Imperial units: DMEAS 3045 Infinity: KEY 79, 188190 Inscribed circle: PSAUS 118 INT function (integer division): PSAUS 97 Interest (money): PSAUS 8294. For a selection of specialised financial calculators which work out things like compound interest, try this site: Financial Calculators. International date line: MMoE 2728 Irrational numbers: KEY 164173 Isosceles triangle: SAVSH 11, 3132 Kaprekar: KEY 115 Kepler: PSAUS 62 Kjarposko Puzzles: KAK, The Dreaded Kjarposkos LCD or LCM (Lowest Common Denominator / Multiple): MANDV 6473, 7880, LCD and HCF calculator Light year: FANG 155156, DMEAS 21, EQEA 62 Line, area, volume: MM2 2454 Locus: SAVSH 2122 Logic Problems: DBB, how to make a liar tell the truth EQEA 6468, Dolly's Rush Hour, Luigi's Outside Table Long Division: SOS 117130, AWAR 123126, Lottery: LUCKY 9394, The National Lottery Odds Lucky numbers: KEY 7677 Magic Squares: MOM 4862, MM1 103106, How to make 5x5 and 7x7 Magic Squares, How to make 4x4 Magic Squares Mathematicians: MM1 8197 Mean: averages MANDV 124156 Measurements: DMEAS whole book, MM2 4454 Median: MANDV 146149 Mersenne Primes: KEY 100103, 142144 The Research Lab Metric System: DMEAS 4551, prefixes EQEA 5860 Mirror numbers: MM2 107108 Mobius strip: BBB 96100, MM2 7480, MMoE 4041 Mode: MANDV 143146 Modulus (MOD function): PSAUS 98, CODES 148149, The Modulus 105 Trick Money: PSAUS 7094, interest and e KEY 180183, history AWAR 135144 Moon: how fast does it move, siderial and synodic months EQEA 4243 Multiplication: SOS 8098, AWAR 93101, Russian Peasant Multiplication EQEA 17 Music: MMoE 6164, How many different tunes can you play on a piano? EQEA 712, Why do some musical notes sound awful together?, How do guitar strings make different notes?, The sounds of SIN and SQUARE waves Mutually exclusive outcomes: LUCKY 106 Nanometer: DMEAS 47 Nets (of solids): ASAS 174178, SAVSH 128136 the 11 nets of a cube see: The Research Lab Newton: PSAUS 6465. For a lot more information on forces, see "Isaac Newton and His Apple" by Kjartan Poskitt 144157 Nim games: MOM 118123 Noughts and crosses: 4dimensional MMoE 53, 3D noughts and crosses Numbers: KEY, The link between Squared Triangle and Cube Numbers Number tricks: MOM 133156, The 71113 trick, The Impossible Guess, The Missing Digit Trick, Riverboat Lil's Mindreader trick Octahedron: PSAUS 149, SAVSH 121. 125, 127, 133134 Odd and Even numbers: AWAR 1516 Odds: LUCKY 3839, 153161 Origami: ASAS 155162 Palindrome numbers: MM2 107108 Parabola: x^{2} graphs PHX 139 144 Paradox: BBB 2528 Parallax: FANG 150, 153 Parallelogram: PSAUS 134 Parallel lines: how to draw FANG 18 Parsecs: FANG 155158 Pascal's Triangle: MMoE 7280, for coefficients of (a+b)^{n} PHX 100, probability LUCKY 6177, combinations LUCKY 9699, Pascal's Triangle How to get Fibonacci series see THE RESEARCH LAB Pendulums: PSAUS 68 Penrose Roger: tiles SAVSH 9091, The Penrose Chickens and Tiles Pentagon: how to fold from paper SAVSH 9798 Pentagonal Number: PSAUS 19 Pentominoes: MM2 1620 Percentages: SOS 171178, PSAUS 72, MANDV 112117 Perfect Numbers: KEY 136146 Perimeter: ASAS 118128, PSAUS 12, 116, MM2 99106, EQEA 7577 Permutations: PSAUS 103105, LUCKY 8188, DBB 4647 Perpendicular bisector: ASAS 32,95 SAVSH 2226 PI: ASAS 5257, KEY 174178, PSAUS 15, 150152, LUCKY 143147, MM2 8994, EQEA 24 Picometer: DMEAS 47 Pizza cutting: PSAUS 31, Chopping Pizzas Planets: distance from sun MMoE 90 Plato: ASAS 167170 Poker hands (chances of): MMoE 84, Chances of different hands of playing cards Polygons: ASAS 129154, SAVSH 5699, PSAUS 116126, tan area formula FANG 126128, The Research Lab Powers: BBB 117121, AWAR 168169, MM1 1518 Prime factors: MANDV 4348 PRIME NUMBERS: explanation MANDV 4044, SOS 133137, KEY 90112, MMoE 1217, MM1 4651, Sudoku prime SUD 126, The SUDOKU Prime, use in codes CODES 148149, The Prime Numbers Trick, The Prime Counter Mersenne Primes KEY 100, 142 The Research Lab Prince Rupert's Cube: EQEA 82 Profit: PSAUS 7074 Proportion: FANG 3031 Protractor: DMEAS 120121, FANG 1617 Pursuit curves: MMoE 44 Puzzles: DBB whole book, SUD, KAK, Dreaded Kjarposkos, Murderous Brainbending Puzzles also see "Sam Loyd" below Pyramid: PSAUS 10, 146 What is the volume of a pyramid? With proof. Pythagoras: MMoE 1922, MM2 8188 construction theorem proof SAVSH 148159, EQEA 2528, cut and paste theorem proof EQEA 26, ASAS 202207 How do guitar strings make different notes? Quadratics: solving equations and formula PHX 5366, PSAUS 138, Solving Quadratics by Completing the Square, Quadratic calculator Radians: DMEAS 124 Ramsey Theorem: EQEA 127129 Ratios: FANG 3037, trigonometry FANG 59 Rectangle: formulas PSAUS 1013 How to turn a Rectangle into a Square of the same area Reducing fractions: MANDV 4951 Regions: Surprising Regions Formula Regular Solids: SAVSH 121136, formulas for surface area and volume PSAUS 149, Regular Solids  formulas for volumes Research Lab: THE RESEARCH LAB (With answers to a very wide variety of odd maths questions!) Rhombus: PSAUS 135 Richter Scale: Earthquake measurements Right angle: MM1 72 Right angled triangles: MM2 8188 Roman numerals: MM1 2731 Rough sums: SOS 198206 Rounding off: AWAR 145152, MM1 126129 RSA codes: CODES 145157 Rubik's Cube: EQEA 83 Russian Peasant Multiplication: EQEA 17 Sam Loyd: The Sam Loyd Sliding Block Puzzle, Sam Loyd's Get Off The Earth Puzzle, Sam Loyd's Eight Queens Puzzle Sampling: LUCKY 149152 Scale: FANG 2029 Scoville rating: Hotness of chilli pepper measurement Sector: PSAUS 156 Segment: PSAUS 157 Semicircle: right angle SAVSH 1213, Semiperimeter: PSAUS 116 Set Square: FANG 1718 Shadow Stick: DMEAS 66 Sierpinski's Triangle: MMoE 80 Sieve of Eratosthenes: MMoE 14, Sieve of Eratosthenes Significant digits/figures: AWAR 145 Simulaneous Equations: graph solving PHX 136137, elimination and substitution PHX 147156 Sin: FANG 6066, 60º, 0º, 90º, 45º FANG 8892, getting values by drawing FANG 9496, sin formula PSAUS 120, sin formula FANG 114118, triangle area formula FANG 128130 Sine wave: FANG 165174, The sounds of SIN and SQUARE waves Skewes' number: EQEA 125 Sohcahtoa: FANG 71 Space: size of moons, planets, stars MMoE 8893 SPEED: PSAUS 3860, BBB 7692, MM2 6173 Sphere: PSAUS 10, 170172 packing into a box EQEA 150151 SQUARE (shape): how to draw with ruler and compasses SAVSH 7476, how to fold SAVSH 94, dividing a square into smaller squares all of different sizes EQEA 29. SQUARE (x^{2}): KEY 4356 Square Pyramid Numbers: KEY 6364, PSAUS 20 Square Roots: EQEA 1822, How to work out Square Roots without a calculator, square root of i The Research Lab Stamps: formula for number of ways of tearing from a sheet PSAUS 2124, 196197, Matthew Sheeran's Amazing Stamps Formula! Standard Form: DMEAS 5663, MM1 130135 Star: distance away FANG 147158, sizes of MMoE 93 Subtraction: SOS 3554, AWAR 5370 Sudoku: how many possible grids? SUD 122127, The SUDOKU Prime Symmetry: MM1 136141 Tan: FANG 6971, 45º FANG 94 Tangents: SAVSH 114 Temperature: DMEAS 169 Tessalation: ASAS 150154, SAVSH 8891, MM1 1921 Testing for factors: MANDV, KEY 108111, Testing if numbers divide by 11, 7 or 13, The 11 Test Tetrahedral Numbers: KEY 6263, PSAUS 19, 90 Tetrahedron: PSAUS 148149, SAVSH 121, 125, 127, 131, 133 Thales: BBB 21, SAVSH 1213, Think of a number tricks: MOM 3947, PHX 79 Tictactoe: 4dimensional MMoE 53, 3D TTT puzzle Time: DMEAS 158167, see Speed, Acceleration, Pendulums Times tables: SOS 5580, AWAR 7192 Topology: MMoE 3842, bridge crossing and drawing problems MM2 136145 fluid handcuffs EQEA 142143 Torus: PSAUS 173174, volume The Research Lab Trancindental numbers: KEY 174183 Trapezium: PSAUS 139142, Calculating the Area of a Trapezium without the height! TRIANGLES: ASAS 3548, SAVSH 3965, formulasPSAUS 126134 constructing FANG 3845, sin area formula FANG 128130 Triangle Numbers: MM2 123130, KEY 5456, PSAUS 1718, 21, 89, MMoE 18, The link between Squared Triangle and Cube Numbers, KEY 6465 Triangulation: FANG 133136 Tricks: DBB, PHX 7490, Professor Fiendish's Tricks and Games Trigonometry: FANG (whole book), PSAUS 121 Trisecting an angle: MMoE 30, How to Trisect an Angle Unit fractions: PSAUS 192 Units of measurement: DMEAS 168174, Some Unusual Units Universe: size of EQEA 61 Vector: EQEA 6972 Volume: measuring DMEAS 127133 Vulgar Fractions: SOS 148152 Wallpaper: Download your Murderous Maths Wallpaper for your computer desktop. Waves: sin cos tan FANG 165180 Weights: smallest number needed for balance scales EQEA 9397 Y intercept (on graphs): PHX 135 Yahtzee: chances of throwing combinations MMoE 83 Zero: invention of 0 MM1 3536, impossible proof PHX 157
