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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 77 · 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. 1.593 × 591 =
  2. 2.59 × 58 =
  3. 3.199 × 193 =
  4. 4.72 × 72 =
  5. 5.591 × 593 =
  6. 6.298 × 297 =
  7. 7.67 × 67 =
  8. 8.68 × 69 =
  9. 9.32 × 31 =
  10. 10.599 × 592 =
  11. 11.69 × 67 =
  12. 12.94 × 94 =
  13. 13.74 × 73 =
  14. 14.86 × 88 =
  15. 15.73 × 71 =
  16. 16.608 × 603 =
  17. 17.594 × 599 =
  18. 18.599 × 594 =
  19. 19.303 × 309 =
  20. 20.491 × 497 =
  21. 21.76 × 77 =
  22. 22.605 × 603 =
  23. 23.197 × 198 =
  24. 24.83 × 84 =
  25. 25.28 × 26 =
  26. 26.52 × 52 =
  27. 27.606 × 601 =
  28. 28.93 × 93 =
  29. 29.396 × 393 =
  30. 30.301 × 304 =
  31. 31.54 × 52 =
  32. 32.32 × 31 =
  33. 33.494 × 496 =
  34. 34.94 × 93 =
  35. 35.91 × 91 =
  36. 36.52 × 54 =
  37. 37.597 × 591 =
  38. 38.61 × 63 =
  39. 39.205 × 205 =
  40. 40.63 × 62 =

Answer key

  1. 350463
  2. 3422
  3. 38407
  4. 5184
  5. 350463
  6. 88506
  7. 4489
  8. 4692
  9. 992
  10. 354608
  11. 4623
  12. 8836
  13. 5402
  14. 7568
  15. 5183
  16. 366624
  17. 355806
  18. 355806
  19. 93627
  20. 244027
  21. 5852
  22. 364815
  23. 39006
  24. 6972
  25. 728
  26. 2704
  27. 364206
  28. 8649
  29. 155628
  30. 91504
  31. 2808
  32. 992
  33. 245024
  34. 8742
  35. 8281
  36. 2808
  37. 352827
  38. 3843
  39. 42025
  40. 3906

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