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Cubes Near 100 Worksheet

Vedic maths trick 27: Cubes near 100 and 1000 · Set 99 · 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. 1.997³ =
  2. 2.108³ =
  3. 3.94³ =
  4. 4.1014³ =
  5. 5.1006³ =
  6. 6.108³ =
  7. 7.98³ =
  8. 8.980³ =
  9. 9.95³ =
  10. 10.96³ =
  11. 11.982³ =
  12. 12.988³ =
  13. 13.106³ =
  14. 14.996³ =
  15. 15.993³ =
  16. 16.983³ =
  17. 17.106³ =
  18. 18.991³ =
  19. 19.93³ =
  20. 20.102³ =
  21. 21.94³ =
  22. 22.101³ =
  23. 23.107³ =
  24. 24.993³ =
  25. 25.1017³ =
  26. 26.1007³ =
  27. 27.987³ =
  28. 28.91³ =
  29. 29.94³ =
  30. 30.1013³ =
  31. 31.95³ =
  32. 32.105³ =
  33. 33.105³ =
  34. 34.108³ =
  35. 35.994³ =
  36. 36.92³ =
  37. 37.1020³ =
  38. 38.980³ =
  39. 39.990³ =
  40. 40.97³ =

Answer key

  1. 991026973
  2. 1259712
  3. 830584
  4. 1042590744
  5. 1018108216
  6. 1259712
  7. 941192
  8. 941192000
  9. 857375
  10. 884736
  11. 946966168
  12. 964430272
  13. 1191016
  14. 988047936
  15. 979146657
  16. 949862087
  17. 1191016
  18. 973242271
  19. 804357
  20. 1061208
  21. 830584
  22. 1030301
  23. 1225043
  24. 979146657
  25. 1051871913
  26. 1021147343
  27. 961504803
  28. 753571
  29. 830584
  30. 1039509197
  31. 857375
  32. 1157625
  33. 1157625
  34. 1259712
  35. 982107784
  36. 778688
  37. 1061208000
  38. 941192000
  39. 970299000
  40. 912673

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