A LITTLE SOMETHING WORTH KNOWING
A small discovery. Yours to pass on.
Math & LogicOne small ahaProduct2 × 10
Think it. Then flip it.✳ ahamoraTap to reveal ↻Back to the cue ↶
Math & LogicOne small aha
Your new aha20
✳ ahamoraReference ↗2 groups of 10 make 20. Reversing the factors, 10 × 2, gives the same product. Source: Multiplication table ↗