Mental Math Tricks
Multiply by 11 in your head. Split bills. Estimate anything.
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149 Xeem / 30 daysXeem — earned, never bought. Show up daily on waxeem.com and unlocking stays free.
Peek inside — 3 of 128 cards
35² (trick)
1225 — 3×4=12, append 25
18% tip on 250?
45 — 10% is 25, +8% is 20
62 × 11
682 — 6_(6+2)_2
About this deck
A trick per card: multiplying by 11, squaring numbers ending in 5, the 9-times finger method, fast percentages, calendar day-of-week. Each with three practice prompts so the trick becomes a reflex.
The kind of deck that pays for itself at every restaurant table.
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