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Abacus (Soroban)
A seven-rod Japanese abacus: learn to read and set numbers, add and subtract with complements, then calculate in your head at speed (anzan).
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Section๐ฌ Science & Maths
Age8-14
Preparing the gameโฆ
How to play
Each rod is one digit: the top bead is worth 5, the bottom ones 1. Tap beads, or use the arrow keys and the keyboard. Levels open in order: reading, setting, adding and subtracting with complements, carry and borrow, then flash anzan and the timed challenge. Earn one to three stars per level.
- ๐ Completely free, no sign-up and no download.
- ๐ฑ Works on phone, tablet and PC, with touch or keyboard.
- ๐ฒ After each round, share your score on WhatsApp and challenge friends to beat it.
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