
Abacus Simulator
Move soroban beads, explore place value, and follow a worked addition example.
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Try a free abacus simulator, a 90-second mental math speed test, and consulting math practice. Choose a tool and start training.

Move soroban beads, explore place value, and follow a worked addition example.

A free 90-second balanced test with accuracy, speed, mistake review, and a focused drill recommendation.

Ten timed case-interview prompts across arithmetic, percentages, estimation, verbal math, and exhibits.