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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 143 · 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 × 59 =
  2. 2.53 × 54 =
  3. 3.58 × 59 =
  4. 4.206 × 202 =
  5. 5.204 × 202 =
  6. 6.18 × 18 =
  7. 7.202 × 202 =
  8. 8.18 × 19 =
  9. 9.499 × 494 =
  10. 10.398 × 393 =
  11. 11.402 × 404 =
  12. 12.94 × 94 =
  13. 13.308 × 303 =
  14. 14.495 × 495 =
  15. 15.199 × 198 =
  16. 16.59 × 59 =
  17. 17.204 × 201 =
  18. 18.598 × 594 =
  19. 19.591 × 598 =
  20. 20.61 × 63 =
  21. 21.43 × 43 =
  22. 22.58 × 57 =
  23. 23.51 × 54 =
  24. 24.599 × 593 =
  25. 25.594 × 591 =
  26. 26.77 × 78 =
  27. 27.57 × 56 =
  28. 28.92 × 93 =
  29. 29.89 × 89 =
  30. 30.508 × 503 =
  31. 31.78 × 79 =
  32. 32.83 × 83 =
  33. 33.497 × 492 =
  34. 34.199 × 198 =
  35. 35.82 × 82 =
  36. 36.503 × 504 =
  37. 37.19 × 18 =
  38. 38.592 × 598 =
  39. 39.31 × 31 =
  40. 40.18 × 17 =

Answer key

  1. 3481
  2. 2862
  3. 3422
  4. 41612
  5. 41208
  6. 324
  7. 40804
  8. 342
  9. 246506
  10. 156414
  11. 162408
  12. 8836
  13. 93324
  14. 245025
  15. 39402
  16. 3481
  17. 41004
  18. 355212
  19. 353418
  20. 3843
  21. 1849
  22. 3306
  23. 2754
  24. 355207
  25. 351054
  26. 6006
  27. 3192
  28. 8556
  29. 7921
  30. 255524
  31. 6162
  32. 6889
  33. 244524
  34. 39402
  35. 6724
  36. 253512
  37. 342
  38. 354016
  39. 961
  40. 306

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