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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 711 · 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. 1.53 × 54 =
  2. 2.27 × 29 =
  3. 3.593 × 591 =
  4. 4.504 × 505 =
  5. 5.305 × 303 =
  6. 6.47 × 46 =
  7. 7.191 × 196 =
  8. 8.498 × 498 =
  9. 9.41 × 42 =
  10. 10.598 × 593 =
  11. 11.36 × 39 =
  12. 12.27 × 26 =
  13. 13.197 × 193 =
  14. 14.38 × 38 =
  15. 15.46 × 49 =
  16. 16.199 × 191 =
  17. 17.16 × 18 =
  18. 18.392 × 396 =
  19. 19.202 × 207 =
  20. 20.301 × 306 =
  21. 21.79 × 77 =
  22. 22.594 × 592 =
  23. 23.28 × 27 =
  24. 24.49 × 49 =
  25. 25.499 × 491 =
  26. 26.51 × 53 =
  27. 27.23 × 23 =
  28. 28.19 × 19 =
  29. 29.394 × 397 =
  30. 30.54 × 52 =
  31. 31.404 × 405 =
  32. 32.496 × 495 =
  33. 33.48 × 49 =
  34. 34.47 × 46 =
  35. 35.406 × 401 =
  36. 36.89 × 87 =
  37. 37.596 × 599 =
  38. 38.27 × 29 =
  39. 39.43 × 41 =
  40. 40.191 × 194 =

Answer key

  1. 2862
  2. 783
  3. 350463
  4. 254520
  5. 92415
  6. 2162
  7. 37436
  8. 248004
  9. 1722
  10. 354614
  11. 1404
  12. 702
  13. 38021
  14. 1444
  15. 2254
  16. 38009
  17. 288
  18. 155232
  19. 41814
  20. 92106
  21. 6083
  22. 351648
  23. 756
  24. 2401
  25. 245009
  26. 2703
  27. 529
  28. 361
  29. 156418
  30. 2808
  31. 163620
  32. 245520
  33. 2352
  34. 2162
  35. 162806
  36. 7743
  37. 357004
  38. 783
  39. 1763
  40. 37054

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