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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 658 · 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. 1.496 × 499 =
  2. 2.28 × 27 =
  3. 3.64 × 61 =
  4. 4.396 × 394 =
  5. 5.77 × 76 =
  6. 6.609 × 608 =
  7. 7.498 × 492 =
  8. 8.49 × 47 =
  9. 9.208 × 208 =
  10. 10.206 × 203 =
  11. 11.406 × 404 =
  12. 12.399 × 392 =
  13. 13.494 × 492 =
  14. 14.79 × 78 =
  15. 15.403 × 406 =
  16. 16.193 × 191 =
  17. 17.207 × 207 =
  18. 18.597 × 592 =
  19. 19.76 × 79 =
  20. 20.88 × 89 =
  21. 21.24 × 22 =
  22. 22.309 × 305 =
  23. 23.39 × 37 =
  24. 24.68 × 68 =
  25. 25.195 × 193 =
  26. 26.301 × 306 =
  27. 27.597 × 592 =
  28. 28.58 × 56 =
  29. 29.27 × 26 =
  30. 30.599 × 598 =
  31. 31.19 × 19 =
  32. 32.81 × 83 =
  33. 33.191 × 191 =
  34. 34.22 × 23 =
  35. 35.38 × 39 =
  36. 36.69 × 67 =
  37. 37.29 × 27 =
  38. 38.69 × 69 =
  39. 39.193 × 192 =
  40. 40.32 × 32 =

Answer key

  1. 247504
  2. 756
  3. 3904
  4. 156024
  5. 5852
  6. 370272
  7. 245016
  8. 2303
  9. 43264
  10. 41818
  11. 164024
  12. 156408
  13. 243048
  14. 6162
  15. 163618
  16. 36863
  17. 42849
  18. 353424
  19. 6004
  20. 7832
  21. 528
  22. 94245
  23. 1443
  24. 4624
  25. 37635
  26. 92106
  27. 353424
  28. 3248
  29. 702
  30. 358202
  31. 361
  32. 6723
  33. 36481
  34. 506
  35. 1482
  36. 4623
  37. 783
  38. 4761
  39. 37056
  40. 1024

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