Ray

Ray

I am a programming enthusiast.
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  • Tangyuan Math
    Tangyuan MathFriendly multiplication practice at your own pace.
    Oct 2026
    • 🎉
    Joined Product HuntJune 16th, 2021

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5h ago

Tangyuan Math - Friendly multiplication practice at your own pace.

A fast 2 digit multiplication trick, plus six mental-math shortcuts with worked examples — and a free game to practice them.
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