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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 360 · 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. 1.491 × 493 =
  2. 2.494 × 493 =
  3. 3.398 × 395 =
  4. 4.33 × 31 =
  5. 5.49 × 49 =
  6. 6.44 × 44 =
  7. 7.82 × 81 =
  8. 8.91 × 92 =
  9. 9.208 × 208 =
  10. 10.78 × 76 =
  11. 11.32 × 31 =
  12. 12.72 × 71 =
  13. 13.51 × 52 =
  14. 14.494 × 493 =
  15. 15.18 × 17 =
  16. 16.599 × 597 =
  17. 17.56 × 59 =
  18. 18.399 × 396 =
  19. 19.94 × 92 =
  20. 20.91 × 92 =
  21. 21.191 × 194 =
  22. 22.408 × 402 =
  23. 23.47 × 47 =
  24. 24.492 × 499 =
  25. 25.52 × 54 =
  26. 26.92 × 93 =
  27. 27.305 × 309 =
  28. 28.501 × 507 =
  29. 29.493 × 499 =
  30. 30.81 × 84 =
  31. 31.201 × 203 =
  32. 32.83 × 84 =
  33. 33.34 × 31 =
  34. 34.192 × 198 =
  35. 35.36 × 37 =
  36. 36.306 × 308 =
  37. 37.505 × 503 =
  38. 38.204 × 201 =
  39. 39.604 × 603 =
  40. 40.34 × 31 =

Answer key

  1. 242063
  2. 243542
  3. 157210
  4. 1023
  5. 2401
  6. 1936
  7. 6642
  8. 8372
  9. 43264
  10. 5928
  11. 992
  12. 5112
  13. 2652
  14. 243542
  15. 306
  16. 357603
  17. 3304
  18. 158004
  19. 8648
  20. 8372
  21. 37054
  22. 164016
  23. 2209
  24. 245508
  25. 2808
  26. 8556
  27. 94245
  28. 254007
  29. 246007
  30. 6804
  31. 40803
  32. 6972
  33. 1054
  34. 38016
  35. 1332
  36. 94248
  37. 254015
  38. 41004
  39. 364212
  40. 1054

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