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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 932 · 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. 1.598 × 591 =
  2. 2.208 × 208 =
  3. 3.203 × 203 =
  4. 4.501 × 508 =
  5. 5.606 × 609 =
  6. 6.87 × 89 =
  7. 7.22 × 23 =
  8. 8.199 × 199 =
  9. 9.292 × 298 =
  10. 10.292 × 294 =
  11. 11.498 × 492 =
  12. 12.41 × 42 =
  13. 13.19 × 18 =
  14. 14.34 × 34 =
  15. 15.58 × 58 =
  16. 16.393 × 394 =
  17. 17.61 × 62 =
  18. 18.604 × 606 =
  19. 19.396 × 395 =
  20. 20.394 × 394 =
  21. 21.596 × 599 =
  22. 22.26 × 26 =
  23. 23.43 × 41 =
  24. 24.194 × 194 =
  25. 25.192 × 196 =
  26. 26.308 × 307 =
  27. 27.603 × 605 =
  28. 28.391 × 398 =
  29. 29.301 × 307 =
  30. 30.403 × 403 =
  31. 31.392 × 393 =
  32. 32.47 × 49 =
  33. 33.598 × 592 =
  34. 34.496 × 495 =
  35. 35.301 × 302 =
  36. 36.304 × 309 =
  37. 37.94 × 93 =
  38. 38.406 × 408 =
  39. 39.193 × 197 =
  40. 40.194 × 199 =

Answer key

  1. 353418
  2. 43264
  3. 41209
  4. 254508
  5. 369054
  6. 7743
  7. 506
  8. 39601
  9. 87016
  10. 85848
  11. 245016
  12. 1722
  13. 342
  14. 1156
  15. 3364
  16. 154842
  17. 3782
  18. 366024
  19. 156420
  20. 155236
  21. 357004
  22. 676
  23. 1763
  24. 37636
  25. 37632
  26. 94556
  27. 364815
  28. 155618
  29. 92407
  30. 162409
  31. 154056
  32. 2303
  33. 354016
  34. 245520
  35. 90902
  36. 93936
  37. 8742
  38. 165648
  39. 38021
  40. 38606

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