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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 149 · 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. 1.501 × 501 =
  2. 2.84 × 83 =
  3. 3.47 × 48 =
  4. 4.204 × 207 =
  5. 5.37 × 37 =
  6. 6.77 × 79 =
  7. 7.607 × 603 =
  8. 8.596 × 599 =
  9. 9.21 × 22 =
  10. 10.51 × 52 =
  11. 11.67 × 68 =
  12. 12.499 × 495 =
  13. 13.83 × 83 =
  14. 14.68 × 66 =
  15. 15.197 × 193 =
  16. 16.197 × 193 =
  17. 17.592 × 595 =
  18. 18.192 × 191 =
  19. 19.24 × 23 =
  20. 20.395 × 398 =
  21. 21.19 × 18 =
  22. 22.17 × 18 =
  23. 23.497 × 497 =
  24. 24.74 × 71 =
  25. 25.199 × 199 =
  26. 26.28 × 26 =
  27. 27.304 × 305 =
  28. 28.39 × 37 =
  29. 29.602 × 603 =
  30. 30.302 × 303 =
  31. 31.28 × 26 =
  32. 32.19 × 18 =
  33. 33.396 × 396 =
  34. 34.21 × 23 =
  35. 35.607 × 602 =
  36. 36.51 × 54 =
  37. 37.19 × 17 =
  38. 38.294 × 295 =
  39. 39.594 × 597 =
  40. 40.504 × 509 =

Answer key

  1. 251001
  2. 6972
  3. 2256
  4. 42228
  5. 1369
  6. 6083
  7. 366021
  8. 357004
  9. 462
  10. 2652
  11. 4556
  12. 247005
  13. 6889
  14. 4488
  15. 38021
  16. 38021
  17. 352240
  18. 36672
  19. 552
  20. 157210
  21. 342
  22. 306
  23. 247009
  24. 5254
  25. 39601
  26. 728
  27. 92720
  28. 1443
  29. 363006
  30. 91506
  31. 728
  32. 342
  33. 156816
  34. 483
  35. 365414
  36. 2754
  37. 323
  38. 86730
  39. 354618
  40. 256536

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