• GBU_28@lemm.ee
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    8 months ago

    You can multiply by 9 on your fingers.

    Hold hands out, fingers splayed, thumbs towards each other. 🙌

    9*2 put your left ring finger down (the 2nd finger). Left of that is tens place, right of that is the ones place.

    So 1 on the left, 8 on the right of the downed finger.

    9*5 put the left thumb down (5th finger.) 4, 5. 45.