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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 891 · 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. 1.39 × 36 =
  2. 2.597 × 593 =
  3. 3.192 × 191 =
  4. 4.406 × 404 =
  5. 5.58 × 57 =
  6. 6.66 × 69 =
  7. 7.495 × 498 =
  8. 8.202 × 203 =
  9. 9.196 × 194 =
  10. 10.18 × 18 =
  11. 11.72 × 72 =
  12. 12.37 × 36 =
  13. 13.92 × 94 =
  14. 14.27 × 27 =
  15. 15.598 × 599 =
  16. 16.195 × 199 =
  17. 17.391 × 393 =
  18. 18.201 × 204 =
  19. 19.61 × 64 =
  20. 20.63 × 63 =
  21. 21.59 × 58 =
  22. 22.43 × 41 =
  23. 23.87 × 89 =
  24. 24.81 × 81 =
  25. 25.17 × 16 =
  26. 26.293 × 297 =
  27. 27.84 × 82 =
  28. 28.205 × 206 =
  29. 29.595 × 594 =
  30. 30.58 × 56 =
  31. 31.81 × 81 =
  32. 32.393 × 394 =
  33. 33.19 × 16 =
  34. 34.66 × 69 =
  35. 35.27 × 28 =
  36. 36.608 × 605 =
  37. 37.34 × 32 =
  38. 38.503 × 504 =
  39. 39.36 × 36 =
  40. 40.598 × 592 =

Answer key

  1. 1404
  2. 354021
  3. 36672
  4. 164024
  5. 3306
  6. 4554
  7. 246510
  8. 41006
  9. 38024
  10. 324
  11. 5184
  12. 1332
  13. 8648
  14. 729
  15. 358202
  16. 38805
  17. 153663
  18. 41004
  19. 3904
  20. 3969
  21. 3422
  22. 1763
  23. 7743
  24. 6561
  25. 272
  26. 87021
  27. 6888
  28. 42230
  29. 353430
  30. 3248
  31. 6561
  32. 154842
  33. 304
  34. 4554
  35. 756
  36. 367840
  37. 1088
  38. 253512
  39. 1296
  40. 354016

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