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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 895 · 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. 1.87 × 88 =
  2. 2.41 × 41 =
  3. 3.18 × 18 =
  4. 4.28 × 29 =
  5. 5.192 × 198 =
  6. 6.399 × 395 =
  7. 7.44 × 44 =
  8. 8.499 × 499 =
  9. 9.51 × 53 =
  10. 10.44 × 44 =
  11. 11.599 × 593 =
  12. 12.67 × 67 =
  13. 13.406 × 407 =
  14. 14.393 × 399 =
  15. 15.293 × 298 =
  16. 16.64 × 61 =
  17. 17.607 × 608 =
  18. 18.41 × 42 =
  19. 19.398 × 391 =
  20. 20.17 × 17 =
  21. 21.33 × 33 =
  22. 22.409 × 405 =
  23. 23.205 × 201 =
  24. 24.37 × 36 =
  25. 25.42 × 42 =
  26. 26.87 × 87 =
  27. 27.52 × 54 =
  28. 28.608 × 607 =
  29. 29.44 × 41 =
  30. 30.302 × 302 =
  31. 31.94 × 92 =
  32. 32.205 × 201 =
  33. 33.84 × 82 =
  34. 34.501 × 501 =
  35. 35.502 × 507 =
  36. 36.596 × 599 =
  37. 37.86 × 89 =
  38. 38.26 × 28 =
  39. 39.306 × 305 =
  40. 40.496 × 497 =

Answer key

  1. 7656
  2. 1681
  3. 324
  4. 812
  5. 38016
  6. 157605
  7. 1936
  8. 249001
  9. 2703
  10. 1936
  11. 355207
  12. 4489
  13. 165242
  14. 156807
  15. 87314
  16. 3904
  17. 369056
  18. 1722
  19. 155618
  20. 289
  21. 1089
  22. 165645
  23. 41205
  24. 1332
  25. 1764
  26. 7569
  27. 2808
  28. 369056
  29. 1804
  30. 91204
  31. 8648
  32. 41205
  33. 6888
  34. 251001
  35. 254514
  36. 357004
  37. 7654
  38. 728
  39. 93330
  40. 246512

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