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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 526 · 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. 2.394 × 397 =
  3. 3.52 × 51 =
  4. 4.36 × 38 =
  5. 5.191 × 199 =
  6. 6.17 × 19 =
  7. 7.202 × 202 =
  8. 8.31 × 34 =
  9. 9.47 × 47 =
  10. 10.193 × 198 =
  11. 11.28 × 29 =
  12. 12.59 × 59 =
  13. 13.51 × 51 =
  14. 14.29 × 26 =
  15. 15.36 × 37 =
  16. 16.94 × 91 =
  17. 17.22 × 23 =
  18. 18.199 × 192 =
  19. 19.194 × 197 =
  20. 20.16 × 19 =
  21. 21.79 × 76 =
  22. 22.32 × 34 =
  23. 23.298 × 298 =
  24. 24.399 × 399 =
  25. 25.207 × 207 =
  26. 26.302 × 302 =
  27. 27.606 × 608 =
  28. 28.402 × 403 =
  29. 29.206 × 204 =
  30. 30.31 × 32 =
  31. 31.405 × 406 =
  32. 32.206 × 209 =
  33. 33.58 × 57 =
  34. 34.33 × 32 =
  35. 35.196 × 192 =
  36. 36.596 × 593 =
  37. 37.595 × 598 =
  38. 38.398 × 398 =
  39. 39.63 × 64 =
  40. 40.38 × 36 =

Answer key

  1. 7656
  2. 156418
  3. 2652
  4. 1368
  5. 38009
  6. 323
  7. 40804
  8. 1054
  9. 2209
  10. 38214
  11. 812
  12. 3481
  13. 2601
  14. 754
  15. 1332
  16. 8554
  17. 506
  18. 38208
  19. 38218
  20. 304
  21. 6004
  22. 1088
  23. 88804
  24. 159201
  25. 42849
  26. 91204
  27. 368448
  28. 162006
  29. 42024
  30. 992
  31. 164430
  32. 43054
  33. 3306
  34. 1056
  35. 37632
  36. 353428
  37. 355810
  38. 158404
  39. 4032
  40. 1368

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