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Cubes Near 100 Worksheet

Vedic maths trick 27: Cubes near 100 and 1000 · Set 421 · 40 sums
TalentJR

The trick (Yavadunam): Left part: the number + twice the difference. Middle part: 3 × the difference squared. Right part: the difference cubed. Each right-hand part has as many digits as the base has zeros — carry the extra, borrow if a part is negative.

NameDateTime takenScore ___ / 40
  1. 1.984³ =
  2. 2.99³ =
  3. 3.1009³ =
  4. 4.1020³ =
  5. 5.107³ =
  6. 6.97³ =
  7. 7.1005³ =
  8. 8.94³ =
  9. 9.94³ =
  10. 10.98³ =
  11. 11.1017³ =
  12. 12.101³ =
  13. 13.994³ =
  14. 14.96³ =
  15. 15.1018³ =
  16. 16.99³ =
  17. 17.1016³ =
  18. 18.107³ =
  19. 19.92³ =
  20. 20.105³ =
  21. 21.106³ =
  22. 22.106³ =
  23. 23.109³ =
  24. 24.1005³ =
  25. 25.1011³ =
  26. 26.982³ =
  27. 27.91³ =
  28. 28.1019³ =
  29. 29.982³ =
  30. 30.1003³ =
  31. 31.91³ =
  32. 32.1003³ =
  33. 33.92³ =
  34. 34.980³ =
  35. 35.1002³ =
  36. 36.94³ =
  37. 37.94³ =
  38. 38.109³ =
  39. 39.990³ =
  40. 40.93³ =

Answer key

  1. 952763904
  2. 970299
  3. 1027243729
  4. 1061208000
  5. 1225043
  6. 912673
  7. 1015075125
  8. 830584
  9. 830584
  10. 941192
  11. 1051871913
  12. 1030301
  13. 982107784
  14. 884736
  15. 1054977832
  16. 970299
  17. 1048772096
  18. 1225043
  19. 778688
  20. 1157625
  21. 1191016
  22. 1191016
  23. 1295029
  24. 1015075125
  25. 1033364331
  26. 946966168
  27. 753571
  28. 1058089859
  29. 946966168
  30. 1009027027
  31. 753571
  32. 1009027027
  33. 778688
  34. 941192000
  35. 1006012008
  36. 830584
  37. 830584
  38. 1295029
  39. 970299000
  40. 804357

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