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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 258 · 40 sums
TalentJR

The trick (Anurupyena): Pick the working base (like 40 = 4 × 10 or 300 = 3 × 100) and write each number’s difference from it. Cross-add as in trick 3, then multiply that left part by 4 (or 3, 5…). Right part: multiply the differences — 1 digit for a × 10 base, 2 digits for a × 100 base (carry the extra).

NameDateTime takenScore ___ / 40
  1. 1.59 × 58 =
  2. 2.67 × 69 =
  3. 3.62 × 64 =
  4. 4.508 × 509 =
  5. 5.52 × 51 =
  6. 6.22 × 22 =
  7. 7.509 × 501 =
  8. 8.194 × 196 =
  9. 9.591 × 598 =
  10. 10.304 × 306 =
  11. 11.53 × 51 =
  12. 12.307 × 304 =
  13. 13.293 × 294 =
  14. 14.194 × 194 =
  15. 15.73 × 73 =
  16. 16.301 × 301 =
  17. 17.57 × 57 =
  18. 18.509 × 508 =
  19. 19.79 × 76 =
  20. 20.26 × 26 =
  21. 21.51 × 54 =
  22. 22.195 × 191 =
  23. 23.81 × 84 =
  24. 24.38 × 37 =
  25. 25.59 × 59 =
  26. 26.596 × 594 =
  27. 27.306 × 303 =
  28. 28.592 × 595 =
  29. 29.27 × 26 =
  30. 30.198 × 197 =
  31. 31.593 × 593 =
  32. 32.28 × 28 =
  33. 33.23 × 21 =
  34. 34.27 × 26 =
  35. 35.608 × 601 =
  36. 36.394 × 398 =
  37. 37.87 × 87 =
  38. 38.306 × 309 =
  39. 39.292 × 298 =
  40. 40.592 × 595 =

Answer key

  1. 3422
  2. 4623
  3. 3968
  4. 258572
  5. 2652
  6. 484
  7. 255009
  8. 38024
  9. 353418
  10. 93024
  11. 2703
  12. 93328
  13. 86142
  14. 37636
  15. 5329
  16. 90601
  17. 3249
  18. 258572
  19. 6004
  20. 676
  21. 2754
  22. 37245
  23. 6804
  24. 1406
  25. 3481
  26. 354024
  27. 92718
  28. 352240
  29. 702
  30. 39006
  31. 351649
  32. 784
  33. 483
  34. 702
  35. 365408
  36. 156812
  37. 7569
  38. 94554
  39. 87016
  40. 352240

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