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The written methods come first: long division, column addition and subtraction with the carrying and borrowing drawn, fractions with bars to one scale, and a multiplication chart up to 20 × 20. Each one shows the working the way it's taught, so a pupil can check their own lines against it.
For number sense there's a place value chart, base ten blocks and a number line, each of which prints. Older students will find the unit circle, a trig calculator with exact values and graphs, a trig identities sheet, radians, and polar, spherical and cylindrical coordinates, all with the point drawn. Physics starts with levers: drag the fulcrum along a beam and the class, the balancing effort and the mechanical advantage follow. There is also your weight on other planets, a gravitational force calculator and a free fall calculator.
Teachers can print most charts with a QR code that leads back to the page, and the free puzzle packs and escape room maker turn math facts into code-breaking lessons.
Every math tool
107 converters in 10 groups
Long divisionThe written method, drawn out, with remainders, fractions or decimals.
Multiplication chartUp to 20 × 20, interactive, with a blank version to print.
Fraction calculatorAll four operations and mixed numbers, with steps and fraction bars.
- Long division7625 / 25becomes305The written method, drawn out, with remainders, fractions or decimals.
- Long multiplicationPartial products, carries and placeholder zeros, drawn as written.
- Order of operationsAny sum worked one step at a time, in PEMDAS or BODMAS order.
- Area model multiplicationThe box method, with every box worked out and added.
- Lattice multiplication4 × 3becomes1|2The grid of digit products, added along the diagonals.
- Addition with regrouping352 + 179becomes531Column addition with every carry written in.
- Subtraction with regrouping4,005 − 1,237becomes2,768Column subtraction with the borrowing crossed out, as on paper.
- Fraction calculator1/4 + 1/6becomes5/12All four operations and mixed numbers, with steps and fraction bars.
- Fraction stripsA fraction wall to shade, add up and compare, printable halves to twelfths.
- Decimal to fraction0.375becomes3/8Any decimal in lowest terms, repeating decimals too, with the algebra shown.
- Fraction to decimal1/6becomes0.16̅Long division that marks exactly where the digits start repeating.
- Mixed numbers and improper fractions3 2/5becomes17/5Either way round, with the steps and fraction bars.
- Fraction to percent3/8becomes37.5%Divide, then multiply by 100, with repeating digits marked exactly.
- Decimal to percent0.05becomes5%Move the point two places, repeating decimals included.
- Percent to fraction12.5%becomes1/8Any percent over 100, then down to lowest terms.
- GCF calculator48, 36becomes12Greatest common factor of two or more numbers, with a Venn diagram and Euclid's method.
- LCM calculator12, 18becomes36Least common multiple, for common denominators, with the prime factors shown.
- Factor tree360becomes2³ × 3² × 5Any number split into primes, with the tree drawn branch by branch.
- Scientific notation calculator0.000345becomes3.45 × 10⁻⁴Convert either way, or multiply, divide, add and subtract, with the steps and sig figs.
- Multiplication chart7 x 8becomes56Up to 20 × 20, interactive, with a blank version to print.
- Division chart56 ÷ 7becomes8Up to 20, interactive, with fact lists and blank answers to print.
- Multiplication flash cardsTimes tables 1 to 12 to turn on screen, or print double-sided.
- Division flash cardsEvery division fact to 144 ÷ 12, on screen or printed.
- Addition flash cardsAddition and subtraction facts to 12 + 12, on screen or printed.
- Hundreds chart1 to 100 or 120, printable, with missing numbers, blanks and skip counts.
- Ten frameTap in red and yellow counters, flash a number, or print frames to count.
- Number bondsPart-whole diagrams to 10, 20 or 100, with gaps to fill and print.
- Prime number chartPrimes to 100 or 200, printable, with a blank grid for the sieve.
- Square numbers chartSquares, cubes and roots to 50, printable, with a root simplifier.
- Mean, median and mode1 2 3 7 7 9becomes5The averages and range of a list, with a dot plot and the working.
- Standard deviationSample and population, with every squared deviation shown.
- Box plot makerQuartiles, IQR and outliers, with three quartile methods.
- Dot plot makerDots or crosses on a number line, with the median marked, to download.
- Stem-and-leaf plotWith a key and the steps, split stems, decimals, and two sets back to back.
- Histogram makerFrom numbers or a grouped table, with frequency density for unequal classes.
- Pythagorean theorem3, 4becomes5The missing side of a right triangle, with exact roots and the triangle drawn.
- Triangle calculator7, 8, 9becomes73.4°Any three sides or angles, solved: SSS, SAS, ASA, AAS and both SSA triangles, drawn to scale.
- Right triangle calculator5, 12becomes13Two values in, the rest out, with SOH CAH TOA working and exact roots.
- Law of sines40°, 60°, 10becomes13.47a/sin A = b/sin B, with both triangles in the ambiguous case.
- Law of cosines5, 8, 60°becomes7A side from two sides and their angle, or an angle from three sides.
- 30-60-90 triangle10becomes5, 5√3The special right triangles, 1 : √3 : 2 and 1 : 1 : √2, from any one side.
- Circle calculatorr = 5becomes10πRadius, diameter, circumference and area from any one, with arcs, sectors and chords in exact π form.
- Perimeter calculator5, 3becomes16Rectangles, triangles, circles, regular polygons, trapezoids and any polygon from its corners, drawn.
- Circumference calculatord = 8becomes8πC = 2πr from the radius, diameter or area, exact and rounded.
- Area of a circled = 12becomes36πA = πr² from the radius, diameter or circumference.
- Arc length calculatorr = 6, 120°becomes4πArc, sector and chord from the radius and an angle in degrees or radians.
- Quadratic formulax² − 5x + 6becomes2, 3Exact roots, complex ones too, with the factored form and the parabola.
- Slope calculator(−2, 3), (2, 0)becomes−3/4Slope from two points as a fraction, with y = mx + b and the line drawn.
- Distance formula calculator(1, 2), (4, 8)becomes3√5Distance between two points as an exact root, with the right triangle drawn.
- Midpoint calculator(1, 2), (4, 8)becomes(5/2, 5)The point halfway between two others, in fractions, or the missing endpoint.
- Endpoint calculatorA(1, 2), M(5/2, 5)becomes(4, 8)The other end of a segment from one end and the midpoint, with a check.
- Coordinate planeA(2, 3)becomesquadrant IPlot points in four quadrants or one, join them into shapes, print blank grids.
- Graph paper1/4 inbecomes29 × 36Printable square, dot or isometric grids at true size, Letter or A4.
- Protractor50°becomesreflex 310°Measure an angle on screen or on a photo, or print a 180° or 360° protractor at true size.
- Combination calculator52 choose 5becomes2,598,960nCr, how many ways to choose, with or without repeats.
- Permutation calculator10, 3becomes720nPr, ordered arrangements, with or without repeats.
- Factorial calculator20!becomes2.43 × 10^18n! exactly, every digit, with the trailing zeros counted.
- Modulo calculator17 mod 5becomes2a mod n for any size of number, negatives both ways.
- Math worksheet generatorPrintable practice sheets with answer keys, made in seconds.
- Long division worksheetsPrintable sheets with an answer key, by 1- or 2-digit divisors.
- Multiplication worksheetsTimes tables practice: tick the tables, print the sheet.
- Subtraction with regrouping worksheetsEvery question needs borrowing at least once.
- Addition with regrouping worksheetsEvery question carries at least once.
- Distance and midpoint worksheetsTen pairs of points a sheet, exact answers and the working in the key.
- Telling time worksheetsTwelve clocks a sheet to read or draw, an answer key, and a practice clock.
- Fraction worksheetsAdd, subtract, multiply or divide, with answers in lowest terms.
- Christmas math worksheetsThe four operations with a holly border and a message to decode.
- Fraction stripsA printable fraction wall, or strips to cut out, labeled or blank.
- Blank Venn diagramTwo, three or four sets, blank or with your own labels and items.
- Counting money worksheetsCount coins, make amounts and work out change, in US or UK money.
- Letter tracing worksheetsOne letter per sheet, capital, small or both, or all 26 as a pack.
- Name tracing worksheetsA name to copy, dotted rows to trace and rows to write on, a sheet per child.
- Dolch sight wordsAll 220 words and 95 nouns: lists, flash cards, word searches.
- Chore chartChores by age or your own, a tick box for each day, points or allowance.
- Reward chartA goal, 5 to 30 stars or hearts to fill, and the reward at the end.
- Lined paperWide, college or narrow ruled, UK 8 mm, or handwriting paper, printed true.
- Cornell notes templateCue column, notes and a summary box, ruled or blank, Letter or A4.
- Paper snowflakesPrintable six-pointed snowflake templates to fold and cut, new every time.
- Place value chart4582becomes4000 + 500 + 80 + 2What each digit is worth, expanded form and words.
- Expanded form calculator352becomes300 + 50 + 2Expanded form as a sum, with ×, with powers of 10 or with fractions.
- Number to words1,234becomesone thousand…Any number in words, with check wording and ordinals.
- Base ten blocks47 + 38becomes85Numbers as cubes, rods and flats, sums as trades, and a printable set.
- Number line23 + 18becomes41Any range, fractions and decimals, or a sum drawn as hops.
- Number bases13becomes1101Decimal, binary, octal and hex, with the working.
- Unit circle150°becomes(−√3/2, 1/2)Exact sin, cos and tan for any angle, and a printable chart.
- Trig calculatorsin, cos, tan, their reciprocals and inverses, exact where it can be, with the steps and the graph.
- Trig identitiesThe standard identities on a printable sheet, with exact values and a 0-90° trig table.
- Degrees to radians45°becomesπ/4Any angle as an exact fraction of π and a decimal.
- Radians to degrees3π/4becomes135°π fractions and decimals to degrees, minutes and seconds.
- Cartesian to polar(3, 4)becomes(5, 53.13°)(x, y) to (r, θ) with the quadrant handled and the point drawn.
- Polar to Cartesian(2, 60°)becomes(1, 1.73)(r, θ) to (x, y), with every cosine and sine worked out.
- Spherical and cylindrical(1, 1, 1)becomesr = 1.733D points between (x, y, z), (r, θ, φ) and (ρ, φ, z).
- Levers100 N × 0.5 mbecomes45.45 NFirst, second and third class on a beam you drag, with the balancing effort, pulleys and a worksheet.
- Ohm's law calculator12V, 2Abecomes6 Ω, 24 WAny two of volts, amps, ohms and watts give the rest.
- Weight on other planets70 kgbecomes26.6 kg on MarsYour weight on the Moon, the Sun, every planet and Pluto, with a printable chart.
- Gravitational force calculatorEarth–Moonbecomes1.98 × 10²⁰ NNewton's law of gravitation solved for any one unknown, with two masses to drag.
- Free fall calculator20 mbecomes2.02 sHeight, time and landing speed of a drop on Earth or any planet.
- Birthday calculator1982-01-12becomes16,335 daysYour age to the day, days alive, next birthday and age on Mars.
- Half birthday calculator12 Janbecomes12 JulSix months on, and the exact halfway point between birthdays.
- Moon phase calculator14 Nov 2016becomesFull moonThe Moon on any date, named, measured and drawn.
- What day of the year is it?todaybecomesday 276Today's day number, days left, and today's Julian date.
- Julian date converter126274becomes1 Oct 2026YYDDD, JD Edwards, Julian Day and Excel dates, read and written.
- Roman numeral dates12/01/1982becomesXII.I.MCMLXXXIIBirthdays and wedding dates in Roman numerals, month or day first.
- Military time converter2:30 PMbecomes143012-hour times to military time and back, with how to say them.
- Birthstones by monthEvery month’s stone, in the four lists that disagree.
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WHY THE STEPS
Answers you can follow
A calculator gives you the answer. These tools give you the working as well, laid out the way it's taught, so you can check your own steps against it line by line and see exactly where a sum went wrong.
Long division draws the whole written method, from 7625 ÷ 25 down to the last remainder. The fraction calculator finds the common denominator and draws a bar for each fraction. The multiplication chart goes up to 20 × 20 and prints blank for practice, and the number base converter shows each division by 2 or 16.
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Questions
Are these free?
Yes. There's nothing to sign up for.
Can I use them in class?
Yes. The working is written in full sentences, so it can be read out or copied down.
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