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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 967 · 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. 1.33 × 33 =
  2. 2.293 × 291 =
  3. 3.94 × 91 =
  4. 4.298 × 294 =
  5. 5.59 × 58 =
  6. 6.58 × 57 =
  7. 7.401 × 404 =
  8. 8.37 × 39 =
  9. 9.495 × 493 =
  10. 10.404 × 402 =
  11. 11.53 × 52 =
  12. 12.201 × 205 =
  13. 13.74 × 72 =
  14. 14.407 × 405 =
  15. 15.68 × 68 =
  16. 16.81 × 81 =
  17. 17.491 × 496 =
  18. 18.494 × 493 =
  19. 19.31 × 31 =
  20. 20.307 × 304 =
  21. 21.24 × 21 =
  22. 22.494 × 491 =
  23. 23.48 × 49 =
  24. 24.297 × 299 =
  25. 25.499 × 495 =
  26. 26.307 × 301 =
  27. 27.52 × 52 =
  28. 28.43 × 43 =
  29. 29.602 × 606 =
  30. 30.591 × 596 =
  31. 31.206 × 201 =
  32. 32.307 × 303 =
  33. 33.305 × 303 =
  34. 34.205 × 206 =
  35. 35.47 × 49 =
  36. 36.63 × 62 =
  37. 37.595 × 591 =
  38. 38.496 × 493 =
  39. 39.87 × 87 =
  40. 40.197 × 193 =

Answer key

  1. 1089
  2. 85263
  3. 8554
  4. 87612
  5. 3422
  6. 3306
  7. 162004
  8. 1443
  9. 244035
  10. 162408
  11. 2756
  12. 41205
  13. 5328
  14. 164835
  15. 4624
  16. 6561
  17. 243536
  18. 243542
  19. 961
  20. 93328
  21. 504
  22. 242554
  23. 2352
  24. 88803
  25. 247005
  26. 92407
  27. 2704
  28. 1849
  29. 364812
  30. 352236
  31. 41406
  32. 93021
  33. 92415
  34. 42230
  35. 2303
  36. 3906
  37. 351645
  38. 244528
  39. 7569
  40. 38021

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