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Trachtenberg Speed Math
Learn the Trachtenberg method to multiply fast using simple rules about neighbouring digits. Eight levels, from ×11 to a final mix.
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Section🔬 Science & Maths
Age8-14
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How to play
Each level starts with the rule and a worked example, read right to left. Then practise five problems with no timer, writing the product digit by digit. Finally beat the clock: ten problems in 120 seconds, typing the full answer; streaks of correct answers multiply points, and 7 correct answers unlock the next level.
- 🆓 Completely free, no sign-up and no download.
- 📱 Works on phone, tablet and PC, with touch or keyboard.
- 📲 After each round, share your score on WhatsApp and challenge friends to beat it.
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