This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American When I tutored elementary school math, one of ...
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IBilib: Multiply by 9 using your fingers!
Aired (June 14, 2026): Want to multiply by 9 faster? Learn a simple finger math trick that can help you solve problems ...
Practice multiplying by 9 using your fingers and several math games. Explore the Multiply by 9 facts by recognizing there is only one new fact: 9 x 9. Compete against characters to see who finds the ...
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