Keep the same whole while you make equal fractional units. Choose a calculation opens a list of preset calculations, including mixed addition and subtraction. Your calculation opens separate controls for two or three operands and addition or subtraction. Enter whole numbers in Wholes with numerator 0 and denominator 1. Improper fractions use Wholes 0.
- Mixed numbers start with their whole and fractional bars together. Choose Partition wholes and parts to separate them into their banks, or choose the improper-fraction method. Choose a common denominator and use the buttons to repartition each operand. New boundaries appear on the same bars. The original fraction and its equivalent appear together to the left of that bar. When you combine, parts move into the last operand frame; when you subtract, parts are matched and removed from the first operand frame. The starting whole frames keep their positions and scale. Three operands sit side by side on classroom screens, with extra units stacked inside each column. After addition, the combined equipment moves into the centre at the same size; two-operand mixed-number banks also centre vertically. Undo restores the operands. Smaller screens use a vertical layout.
- Combine like parts for addition. For subtraction, keep the first, second and any third fraction in their original order. If there are too few fractional parts, Exchange one whole. The whole count decreases by one and the fractional count increases by the denominator before you remove anything. The number sentence retains the original and common-unit calculations, then adds the exchanged calculation. Choose Subtract wholes first to show the whole-number difference with a blank fractional answer. Then choose Subtract fractions to complete the mixed-number answer. If an operand has no whole or fractional part, the corresponding empty action is skipped.
- Make one whole regroups one denominator's worth of parts. On the three-column display, the bar stays in place while its dividing lines disappear and its label changes to 1 and the completed whole becomes one solid colour. For two-fraction addition using partitioning, make the whole first: it stays beside the remaining fraction. Then choose Combine wholes to move it into the existing whole bank. Repeat Make one whole if needed. Other calculations finish with Recombine. Unsimplified and whole-plus-improper working stays visible until you choose the next action.
- Completed whole units use one colour. Use Simplify or change final form only when you want to. Simplify keeps the unsimplified answer and adds its simplified equivalent after another equals sign. Different common denominators can lead to equivalent correct answers.
Open Practice to enter your response, use a hint or reveal the worked solution. Check checks your entered value and separately checks the requested form. Use separate whole, numerator and denominator fields; a physical keyboard or the shared tap-to-enter keypad works. Hint gives a partial cue. Reveal shows a worked method and Return to my work restores your own working.
Method keeps separate working for partition/exchange and improper fractions. For two-term subtraction, Count on gives a shared number line: add a jump to a whole boundary or to the final value, then combine the distances. It keeps the subtraction givens unchanged.
If the fraction is already in the chosen final form or is already simplified, it stays as it is.
When every fraction has been repartitioned, the number sentence keeps the original calculation and adds the equivalent calculation in your chosen units. After combining or completing the ordered subtraction, the result replaces the answer space at the end of that sentence. An emptied addition bar fades away after its pieces have joined the result; Undo restores it.
Show compares your common denominator with the lowest one. Thick boundaries retain the original partition. Fraction labels sit to the left, centred on their bars. The final improper fraction shows each complete fractional whole separately for up to six wholes. Every equipment bar is one whole; “× n” explicitly counts repeated identical wholes.
Practice selects teaching or practice, task type, denominator pool, largest whole part, result/exchange requirements, answer form and hints. These choices affect fresh questions; applying them keeps the present calculation. Missing-operand tasks conceal that operand's equipment until you check it correctly. Error tasks ask you to identify the incorrect step and give the corrected answer.
New question preserves those choices and gives an unseen question. Presets count as seen. If choices run out, change them or deliberately choose Restart question session. Clear working keeps this example and all choices. Reset restores the starting example and choices. Undo beside the current action, or a previous step in Method, revisits your mathematical actions without changing the givens. Undo can also interrupt a movement.
Custom operands range from 0 to 999, with entered denominators 1–100 and a common denominator no larger than 360. Each subtraction must stay non-negative. Invalid entries leave the current example intact.
Share this setup opens a clean copy of your teacher choices and explicitly entered givens, without answers or working. Generated question identity is not shared. Print prints the current stage on one branded A4 landscape side. The display fits typical laptop and classroom screens. Fullscreen gives more room; smaller screens use readable vertical scrolling. No pupil records or scores are collected.
