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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 518 · 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 × 593 =
  2. 2.83 × 82 =
  3. 3.87 × 86 =
  4. 4.24 × 24 =
  5. 5.58 × 58 =
  6. 6.56 × 57 =
  7. 7.38 × 38 =
  8. 8.196 × 198 =
  9. 9.506 × 501 =
  10. 10.18 × 18 =
  11. 11.298 × 292 =
  12. 12.497 × 493 =
  13. 13.597 × 594 =
  14. 14.206 × 205 =
  15. 15.194 × 191 =
  16. 16.607 × 601 =
  17. 17.493 × 496 =
  18. 18.28 × 27 =
  19. 19.303 × 305 =
  20. 20.401 × 409 =
  21. 21.192 × 196 =
  22. 22.67 × 67 =
  23. 23.17 × 19 =
  24. 24.209 × 202 =
  25. 25.56 × 58 =
  26. 26.52 × 53 =
  27. 27.63 × 63 =
  28. 28.41 × 43 =
  29. 29.32 × 32 =
  30. 30.89 × 88 =
  31. 31.49 × 47 =
  32. 32.406 × 406 =
  33. 33.602 × 604 =
  34. 34.61 × 64 =
  35. 35.16 × 19 =
  36. 36.395 × 392 =
  37. 37.46 × 48 =
  38. 38.18 × 17 =
  39. 39.69 × 66 =
  40. 40.391 × 392 =

Answer key

  1. 351649
  2. 6806
  3. 7482
  4. 576
  5. 3364
  6. 3192
  7. 1444
  8. 38808
  9. 253506
  10. 324
  11. 87016
  12. 245021
  13. 354618
  14. 42230
  15. 37054
  16. 364807
  17. 244528
  18. 756
  19. 92415
  20. 164009
  21. 37632
  22. 4489
  23. 323
  24. 42218
  25. 3248
  26. 2756
  27. 3969
  28. 1763
  29. 1024
  30. 7832
  31. 2303
  32. 164836
  33. 363608
  34. 3904
  35. 304
  36. 154840
  37. 2208
  38. 306
  39. 4554
  40. 153272

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