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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 332 · 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. 1.495 × 495 =
  2. 2.407 × 404 =
  3. 3.493 × 496 =
  4. 4.199 × 194 =
  5. 5.36 × 38 =
  6. 6.27 × 28 =
  7. 7.78 × 77 =
  8. 8.202 × 206 =
  9. 9.69 × 69 =
  10. 10.34 × 34 =
  11. 11.602 × 604 =
  12. 12.73 × 73 =
  13. 13.592 × 599 =
  14. 14.76 × 76 =
  15. 15.497 × 498 =
  16. 16.195 × 193 =
  17. 17.393 × 396 =
  18. 18.401 × 405 =
  19. 19.28 × 27 =
  20. 20.23 × 24 =
  21. 21.93 × 92 =
  22. 22.63 × 64 =
  23. 23.48 × 49 =
  24. 24.29 × 26 =
  25. 25.51 × 53 =
  26. 26.51 × 51 =
  27. 27.87 × 87 =
  28. 28.195 × 199 =
  29. 29.59 × 59 =
  30. 30.403 × 402 =
  31. 31.205 × 208 =
  32. 32.508 × 508 =
  33. 33.38 × 37 =
  34. 34.198 × 192 =
  35. 35.28 × 26 =
  36. 36.306 × 303 =
  37. 37.498 × 496 =
  38. 38.27 × 28 =
  39. 39.41 × 41 =
  40. 40.77 × 76 =

Answer key

  1. 245025
  2. 164428
  3. 244528
  4. 38606
  5. 1368
  6. 756
  7. 6006
  8. 41612
  9. 4761
  10. 1156
  11. 363608
  12. 5329
  13. 354608
  14. 5776
  15. 247506
  16. 37635
  17. 155628
  18. 162405
  19. 756
  20. 552
  21. 8556
  22. 4032
  23. 2352
  24. 754
  25. 2703
  26. 2601
  27. 7569
  28. 38805
  29. 3481
  30. 162006
  31. 42640
  32. 258064
  33. 1406
  34. 38016
  35. 728
  36. 92718
  37. 247008
  38. 756
  39. 1681
  40. 5852

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