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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 114 · 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. 1.396 × 396 =
  2. 2.492 × 491 =
  3. 3.396 × 399 =
  4. 4.64 × 63 =
  5. 5.203 × 202 =
  6. 6.22 × 24 =
  7. 7.16 × 16 =
  8. 8.408 × 406 =
  9. 9.301 × 309 =
  10. 10.38 × 37 =
  11. 11.195 × 194 =
  12. 12.401 × 407 =
  13. 13.86 × 89 =
  14. 14.198 × 192 =
  15. 15.598 × 598 =
  16. 16.67 × 67 =
  17. 17.497 × 491 =
  18. 18.39 × 39 =
  19. 19.66 × 67 =
  20. 20.36 × 37 =
  21. 21.204 × 202 =
  22. 22.79 × 79 =
  23. 23.604 × 603 =
  24. 24.49 × 49 =
  25. 25.47 × 47 =
  26. 26.81 × 84 =
  27. 27.598 × 593 =
  28. 28.298 × 299 =
  29. 29.68 × 66 =
  30. 30.295 × 293 =
  31. 31.401 × 401 =
  32. 32.21 × 23 =
  33. 33.209 × 205 =
  34. 34.57 × 58 =
  35. 35.392 × 396 =
  36. 36.299 × 294 =
  37. 37.68 × 68 =
  38. 38.44 × 42 =
  39. 39.33 × 33 =
  40. 40.47 × 47 =

Answer key

  1. 156816
  2. 241572
  3. 158004
  4. 4032
  5. 41006
  6. 528
  7. 256
  8. 165648
  9. 93009
  10. 1406
  11. 37830
  12. 163207
  13. 7654
  14. 38016
  15. 357604
  16. 4489
  17. 244027
  18. 1521
  19. 4422
  20. 1332
  21. 41208
  22. 6241
  23. 364212
  24. 2401
  25. 2209
  26. 6804
  27. 354614
  28. 89102
  29. 4488
  30. 86435
  31. 160801
  32. 483
  33. 42845
  34. 3306
  35. 155232
  36. 87906
  37. 4624
  38. 1848
  39. 1089
  40. 2209

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