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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 179 · 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. 1.394 × 398 =
  2. 2.502 × 506 =
  3. 3.64 × 63 =
  4. 4.31 × 32 =
  5. 5.302 × 306 =
  6. 6.191 × 198 =
  7. 7.599 × 592 =
  8. 8.21 × 24 =
  9. 9.56 × 58 =
  10. 10.308 × 301 =
  11. 11.305 × 308 =
  12. 12.44 × 42 =
  13. 13.26 × 26 =
  14. 14.19 × 19 =
  15. 15.206 × 205 =
  16. 16.56 × 56 =
  17. 17.18 × 18 =
  18. 18.54 × 53 =
  19. 19.33 × 31 =
  20. 20.92 × 94 =
  21. 21.49 × 48 =
  22. 22.78 × 79 =
  23. 23.195 × 199 =
  24. 24.493 × 493 =
  25. 25.66 × 67 =
  26. 26.39 × 37 =
  27. 27.197 × 198 =
  28. 28.76 × 78 =
  29. 29.192 × 197 =
  30. 30.63 × 61 =
  31. 31.297 × 293 =
  32. 32.49 × 48 =
  33. 33.32 × 33 =
  34. 34.69 × 69 =
  35. 35.191 × 196 =
  36. 36.27 × 26 =
  37. 37.72 × 74 =
  38. 38.203 × 202 =
  39. 39.88 × 89 =
  40. 40.59 × 58 =

Answer key

  1. 156812
  2. 254012
  3. 4032
  4. 992
  5. 92412
  6. 37818
  7. 354608
  8. 504
  9. 3248
  10. 92708
  11. 93940
  12. 1848
  13. 676
  14. 361
  15. 42230
  16. 3136
  17. 324
  18. 2862
  19. 1023
  20. 8648
  21. 2352
  22. 6162
  23. 38805
  24. 243049
  25. 4422
  26. 1443
  27. 39006
  28. 5928
  29. 37824
  30. 3843
  31. 87021
  32. 2352
  33. 1056
  34. 4761
  35. 37436
  36. 702
  37. 5328
  38. 41006
  39. 7832
  40. 3422

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