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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 913 · 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. 1.88 × 87 =
  2. 2.26 × 27 =
  3. 3.27 × 26 =
  4. 4.298 × 299 =
  5. 5.51 × 51 =
  6. 6.395 × 398 =
  7. 7.24 × 22 =
  8. 8.69 × 68 =
  9. 9.53 × 53 =
  10. 10.17 × 17 =
  11. 11.194 × 192 =
  12. 12.19 × 19 =
  13. 13.92 × 93 =
  14. 14.33 × 31 =
  15. 15.392 × 392 =
  16. 16.503 × 501 =
  17. 17.193 × 199 =
  18. 18.305 × 308 =
  19. 19.16 × 16 =
  20. 20.32 × 34 =
  21. 21.81 × 84 =
  22. 22.49 × 46 =
  23. 23.18 × 19 =
  24. 24.93 × 91 =
  25. 25.57 × 56 =
  26. 26.598 × 591 =
  27. 27.199 × 198 =
  28. 28.606 × 601 =
  29. 29.28 × 29 =
  30. 30.23 × 24 =
  31. 31.192 × 194 =
  32. 32.505 × 507 =
  33. 33.191 × 193 =
  34. 34.82 × 81 =
  35. 35.604 × 603 =
  36. 36.194 × 198 =
  37. 37.47 × 49 =
  38. 38.204 × 207 =
  39. 39.33 × 33 =
  40. 40.79 × 79 =

Answer key

  1. 7656
  2. 702
  3. 702
  4. 89102
  5. 2601
  6. 157210
  7. 528
  8. 4692
  9. 2809
  10. 289
  11. 37248
  12. 361
  13. 8556
  14. 1023
  15. 153664
  16. 252003
  17. 38407
  18. 93940
  19. 256
  20. 1088
  21. 6804
  22. 2254
  23. 342
  24. 8463
  25. 3192
  26. 353418
  27. 39402
  28. 364206
  29. 812
  30. 552
  31. 37248
  32. 256035
  33. 36863
  34. 6642
  35. 364212
  36. 38412
  37. 2303
  38. 42228
  39. 1089
  40. 6241

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