Free abacus and mental math tools
Small, focused tools that work without an account. Build a printable worksheet, open a virtual soroban, or drill a technique — none of them needs a sign-up.
Use online
Tools you work in on screen — the abacus itself, the drills, and the step-by-step solver.
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Virtual soroban
A full Japanese abacus in the browser — drag the beads, show or hide the digits, up to 15 rods.Open →📘How to use an abacus
An interactive twenty-chapter walkthrough — the parts, place value, and how carrying and borrowing work on the beads.Open →🎯Practice drills
Twenty-two pages of drills by technique, problem width and format. Sample problems and answers on every one.Open →⚡Flash anzan
Rule-targeted flash cards — numbers flash, you keep the total in your head.Open →🀄Virtual suanpan
The Chinese 2+5 abacus — every one of the seven beads on a rod moves, so a rod can hold up to 15.Open →📗How to use a suanpan
A guided walkthrough on a real 2+5 frame — reading the beads, the two ways to show a digit, and parking a rod above nine.Open →🧭Guide Me
Type a sum and watch the beads move one step at a time, with the technique named at every move.Open →👥Share a live abacus
Work on the same frame from two screens. You decide who can move the beads.Open →🏁Mental math drill
A timed arithmetic sprint: the instant your typed answer is right, the next problem appears. A hundred levels, five clocks from 30 seconds to 10 minutes.Open →📜Anzan Kentei
Timed mock exams for the Japanese anzan kentei, marked like the real paper: 10–7, 6 and 5 kyu free on this site, 4 kyu to dan in the Kani Math app.Open →🎖️Flash Anzan Kentei
Practice sittings for 40 levels modelled on Japan’s flash anzan kentei, 20 kyu to 20th dan: ten flashed sums a level, marked with the pass and semi-pass bands.Open →Printables
Generators whose output leaves the screen on paper, each with its own answer key.
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Printable abacus worksheet generator
Choose digits, rows and operations, then download a printable PDF with a matching answer key.Open →📝Math worksheet maker
Build your own sheet: any operation, any digit width, PDF download with a matching answer key.Open →📚Ready-made packs
Ready-made printable packs: addition, subtraction, multiplication and division by level, each with an answer key.Open →📄Competition paper
Generate a printable seeded mock competition paper — 200 questions with an answer key, categories A to I.Open →🃏Soroban flash cards
Generate a printable deck of bead-reading cards: one, two or three rods, with an answer key.Open →🎯Rule worksheets
Printable sheets where every problem uses the bead rule you choose.Open →Charts & tables
The number facts laid out whole — complements, bonds, times tables and the hundred grid, as charts to read, drills to answer and blanks to fill in.
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Complement chart
Small friends and big friends on one printable page — every 5- and 10-complement pair, for adding and subtracting.Open →✖️Times tables
Every table from 2 to 12: a timed quiz, printable charts and worksheets, and a victory card for a perfect run.Open →🔗Number bonds
Bonds to 5, 10 and 20 as an interactive chart, a find-the-partner drill, and printable practice sheets.Open →💯Hundred chart
An interactive 1–100 grid with skip-counting highlights — print it filled, blank, with missing numbers, or as a 120 chart.Open →⏱️Abacus reading speed test
Sixty seconds of soroban frames. Tap the number you see or type it, and find out how many you can read in a minute.Open →👀Read the abacus
See a frame, name the number. Four rungs from single beads to interior zeros.Open →🫰Make numbers on an abacus
A number appears, you build it on the beads. The harder direction, and the one that proves it.Open →Find your level
Short checks that answer where to start and what to practice next.
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