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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 376 · 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. 1.204 × 208 =
  2. 2.201 × 209 =
  3. 3.306 × 309 =
  4. 4.69 × 67 =
  5. 5.42 × 42 =
  6. 6.303 × 306 =
  7. 7.46 × 49 =
  8. 8.202 × 206 =
  9. 9.29 × 29 =
  10. 10.44 × 44 =
  11. 11.194 × 197 =
  12. 12.593 × 592 =
  13. 13.37 × 36 =
  14. 14.16 × 19 =
  15. 15.94 × 92 =
  16. 16.606 × 606 =
  17. 17.49 × 49 =
  18. 18.496 × 497 =
  19. 19.58 × 56 =
  20. 20.402 × 409 =
  21. 21.38 × 39 =
  22. 22.598 × 599 =
  23. 23.596 × 594 =
  24. 24.74 × 71 =
  25. 25.94 × 94 =
  26. 26.29 × 29 =
  27. 27.43 × 44 =
  28. 28.41 × 44 =
  29. 29.92 × 92 =
  30. 30.18 × 18 =
  31. 31.595 × 591 =
  32. 32.51 × 52 =
  33. 33.303 × 304 =
  34. 34.32 × 32 =
  35. 35.54 × 51 =
  36. 36.491 × 499 =
  37. 37.37 × 39 =
  38. 38.604 × 608 =
  39. 39.52 × 54 =
  40. 40.32 × 31 =

Answer key

  1. 42432
  2. 42009
  3. 94554
  4. 4623
  5. 1764
  6. 92718
  7. 2254
  8. 41612
  9. 841
  10. 1936
  11. 38218
  12. 351056
  13. 1332
  14. 304
  15. 8648
  16. 367236
  17. 2401
  18. 246512
  19. 3248
  20. 164418
  21. 1482
  22. 358202
  23. 354024
  24. 5254
  25. 8836
  26. 841
  27. 1892
  28. 1804
  29. 8464
  30. 324
  31. 351645
  32. 2652
  33. 92112
  34. 1024
  35. 2754
  36. 245009
  37. 1443
  38. 367232
  39. 2808
  40. 992

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