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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 38 · 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. 1.59 × 57 =
  2. 2.603 × 601 =
  3. 3.196 × 194 =
  4. 4.591 × 597 =
  5. 5.204 × 205 =
  6. 6.21 × 23 =
  7. 7.38 × 39 =
  8. 8.56 × 56 =
  9. 9.291 × 291 =
  10. 10.28 × 28 =
  11. 11.195 × 198 =
  12. 12.81 × 82 =
  13. 13.501 × 502 =
  14. 14.307 × 306 =
  15. 15.46 × 47 =
  16. 16.501 × 508 =
  17. 17.74 × 72 =
  18. 18.308 × 304 =
  19. 19.492 × 499 =
  20. 20.203 × 202 =
  21. 21.69 × 68 =
  22. 22.34 × 34 =
  23. 23.303 × 305 =
  24. 24.404 × 407 =
  25. 25.491 × 494 =
  26. 26.89 × 86 =
  27. 27.47 × 47 =
  28. 28.16 × 19 =
  29. 29.205 × 201 =
  30. 30.23 × 21 =
  31. 31.391 × 396 =
  32. 32.74 × 74 =
  33. 33.22 × 21 =
  34. 34.395 × 396 =
  35. 35.596 × 591 =
  36. 36.33 × 33 =
  37. 37.206 × 206 =
  38. 38.93 × 92 =
  39. 39.31 × 34 =
  40. 40.71 × 73 =

Answer key

  1. 3363
  2. 362403
  3. 38024
  4. 352827
  5. 41820
  6. 483
  7. 1482
  8. 3136
  9. 84681
  10. 784
  11. 38610
  12. 6642
  13. 251502
  14. 93942
  15. 2162
  16. 254508
  17. 5328
  18. 93632
  19. 245508
  20. 41006
  21. 4692
  22. 1156
  23. 92415
  24. 164428
  25. 242554
  26. 7654
  27. 2209
  28. 304
  29. 41205
  30. 483
  31. 154836
  32. 5476
  33. 462
  34. 156420
  35. 352236
  36. 1089
  37. 42436
  38. 8556
  39. 1054
  40. 5183

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