A cube is a number times itself three times. For a 2-digit number ab, Vedic maths writes four terms in a row and doubles the middle two.
✓ You passed this trick’s test.
The trick
Anurupyena — “proportionately”
Top row: a³, a²b, ab², b³ (each term is the one before × b ÷ a).
Under the two middle terms write double of them, and add: a³ | 3a²b | 3ab² | b³.
Combine from the right with carries.
Use it for: Cubes of 11 to 99 (and checking cube-root answers from trick 10).
Worked example: 23³ = 12167
Top row: 8, 12, 18, 27.
Double the middle two and add: 8 | 36 | 54 | 27.
From the right: 27 → 7 carry 2; 56 → 6 carry 5; 41 → 1 carry 4; 12.
Answer: 12167.
Check: 23 × 23 = 529, 529 × 23 = 12167 ✓
✏️ Practice
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
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🏁 Trick 17 test
20 sums. Check each answer, then go to the next one. Get 16 or more right to pass.
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