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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 259 · 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. 1.26 × 29 =
  2. 2.392 × 391 =
  3. 3.72 × 74 =
  4. 4.605 × 609 =
  5. 5.192 × 195 =
  6. 6.53 × 51 =
  7. 7.93 × 94 =
  8. 8.194 × 197 =
  9. 9.69 × 68 =
  10. 10.43 × 42 =
  11. 11.51 × 53 =
  12. 12.209 × 206 =
  13. 13.59 × 59 =
  14. 14.46 × 47 =
  15. 15.84 × 81 =
  16. 16.405 × 409 =
  17. 17.195 × 194 =
  18. 18.209 × 202 =
  19. 19.29 × 29 =
  20. 20.298 × 291 =
  21. 21.199 × 194 =
  22. 22.36 × 39 =
  23. 23.39 × 39 =
  24. 24.594 × 592 =
  25. 25.18 × 17 =
  26. 26.202 × 206 =
  27. 27.394 × 395 =
  28. 28.397 × 398 =
  29. 29.73 × 71 =
  30. 30.86 × 88 =
  31. 31.209 × 201 =
  32. 32.42 × 41 =
  33. 33.47 × 48 =
  34. 34.198 × 192 =
  35. 35.295 × 292 =
  36. 36.19 × 16 =
  37. 37.305 × 303 =
  38. 38.32 × 31 =
  39. 39.41 × 43 =
  40. 40.71 × 73 =

Answer key

  1. 754
  2. 153272
  3. 5328
  4. 368445
  5. 37440
  6. 2703
  7. 8742
  8. 38218
  9. 4692
  10. 1806
  11. 2703
  12. 43054
  13. 3481
  14. 2162
  15. 6804
  16. 165645
  17. 37830
  18. 42218
  19. 841
  20. 86718
  21. 38606
  22. 1404
  23. 1521
  24. 351648
  25. 306
  26. 41612
  27. 155630
  28. 158006
  29. 5183
  30. 7568
  31. 42009
  32. 1722
  33. 2256
  34. 38016
  35. 86140
  36. 304
  37. 92415
  38. 992
  39. 1763
  40. 5183

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