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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 569 · 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. 1.57 × 59 =
  2. 2.32 × 33 =
  3. 3.33 × 33 =
  4. 4.32 × 31 =
  5. 5.492 × 496 =
  6. 6.305 × 301 =
  7. 7.193 × 193 =
  8. 8.26 × 27 =
  9. 9.51 × 52 =
  10. 10.602 × 602 =
  11. 11.91 × 91 =
  12. 12.32 × 31 =
  13. 13.295 × 294 =
  14. 14.29 × 29 =
  15. 15.394 × 399 =
  16. 16.594 × 598 =
  17. 17.73 × 74 =
  18. 18.606 × 606 =
  19. 19.17 × 19 =
  20. 20.57 × 59 =
  21. 21.59 × 59 =
  22. 22.54 × 51 =
  23. 23.392 × 396 =
  24. 24.46 × 47 =
  25. 25.505 × 509 =
  26. 26.298 × 299 =
  27. 27.491 × 492 =
  28. 28.51 × 51 =
  29. 29.76 × 77 =
  30. 30.94 × 93 =
  31. 31.596 × 595 =
  32. 32.87 × 88 =
  33. 33.61 × 62 =
  34. 34.69 × 66 =
  35. 35.409 × 409 =
  36. 36.608 × 601 =
  37. 37.593 × 595 =
  38. 38.191 × 194 =
  39. 39.81 × 83 =
  40. 40.201 × 205 =

Answer key

  1. 3363
  2. 1056
  3. 1089
  4. 992
  5. 244032
  6. 91805
  7. 37249
  8. 702
  9. 2652
  10. 362404
  11. 8281
  12. 992
  13. 86730
  14. 841
  15. 157206
  16. 355212
  17. 5402
  18. 367236
  19. 323
  20. 3363
  21. 3481
  22. 2754
  23. 155232
  24. 2162
  25. 257045
  26. 89102
  27. 241572
  28. 2601
  29. 5852
  30. 8742
  31. 354620
  32. 7656
  33. 3782
  34. 4554
  35. 167281
  36. 365408
  37. 352835
  38. 37054
  39. 6723
  40. 41205

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