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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 319 · 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. 1.403 × 406 =
  2. 2.399 × 397 =
  3. 3.599 × 591 =
  4. 4.294 × 292 =
  5. 5.305 × 301 =
  6. 6.203 × 203 =
  7. 7.394 × 392 =
  8. 8.398 × 396 =
  9. 9.596 × 599 =
  10. 10.52 × 53 =
  11. 11.592 × 592 =
  12. 12.605 × 609 =
  13. 13.54 × 51 =
  14. 14.24 × 22 =
  15. 15.67 × 69 =
  16. 16.77 × 76 =
  17. 17.59 × 57 =
  18. 18.19 × 17 =
  19. 19.495 × 497 =
  20. 20.33 × 31 =
  21. 21.207 × 204 =
  22. 22.61 × 63 =
  23. 23.197 × 195 =
  24. 24.32 × 31 =
  25. 25.49 × 48 =
  26. 26.196 × 191 =
  27. 27.395 × 399 =
  28. 28.202 × 209 =
  29. 29.92 × 91 =
  30. 30.84 × 84 =
  31. 31.28 × 29 =
  32. 32.308 × 301 =
  33. 33.42 × 42 =
  34. 34.503 × 506 =
  35. 35.594 × 594 =
  36. 36.399 × 398 =
  37. 37.44 × 41 =
  38. 38.37 × 36 =
  39. 39.42 × 41 =
  40. 40.46 × 46 =

Answer key

  1. 163618
  2. 158403
  3. 354009
  4. 85848
  5. 91805
  6. 41209
  7. 154448
  8. 157608
  9. 357004
  10. 2756
  11. 350464
  12. 368445
  13. 2754
  14. 528
  15. 4623
  16. 5852
  17. 3363
  18. 323
  19. 246015
  20. 1023
  21. 42228
  22. 3843
  23. 38415
  24. 992
  25. 2352
  26. 37436
  27. 157605
  28. 42218
  29. 8372
  30. 7056
  31. 812
  32. 92708
  33. 1764
  34. 254518
  35. 352836
  36. 158802
  37. 1804
  38. 1332
  39. 1722
  40. 2116

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