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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 199 · 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. 1.36 × 38 =
  2. 2.593 × 592 =
  3. 3.399 × 394 =
  4. 4.395 × 399 =
  5. 5.199 × 199 =
  6. 6.191 × 191 =
  7. 7.596 × 597 =
  8. 8.33 × 32 =
  9. 9.296 × 293 =
  10. 10.301 × 303 =
  11. 11.16 × 19 =
  12. 12.94 × 93 =
  13. 13.36 × 39 =
  14. 14.401 × 404 =
  15. 15.299 × 299 =
  16. 16.86 × 88 =
  17. 17.21 × 23 =
  18. 18.602 × 604 =
  19. 19.495 × 499 =
  20. 20.83 × 82 =
  21. 21.54 × 54 =
  22. 22.38 × 37 =
  23. 23.63 × 62 =
  24. 24.61 × 61 =
  25. 25.306 × 309 =
  26. 26.608 × 603 =
  27. 27.19 × 19 =
  28. 28.294 × 292 =
  29. 29.201 × 201 =
  30. 30.21 × 23 =
  31. 31.74 × 72 =
  32. 32.63 × 63 =
  33. 33.28 × 27 =
  34. 34.79 × 79 =
  35. 35.397 × 397 =
  36. 36.401 × 409 =
  37. 37.17 × 16 =
  38. 38.39 × 37 =
  39. 39.195 × 193 =
  40. 40.295 × 294 =

Answer key

  1. 1368
  2. 351056
  3. 157206
  4. 157605
  5. 39601
  6. 36481
  7. 355812
  8. 1056
  9. 86728
  10. 91203
  11. 304
  12. 8742
  13. 1404
  14. 162004
  15. 89401
  16. 7568
  17. 483
  18. 363608
  19. 247005
  20. 6806
  21. 2916
  22. 1406
  23. 3906
  24. 3721
  25. 94554
  26. 366624
  27. 361
  28. 85848
  29. 40401
  30. 483
  31. 5328
  32. 3969
  33. 756
  34. 6241
  35. 157609
  36. 164009
  37. 272
  38. 1443
  39. 37635
  40. 86730

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