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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 738 · 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. 1.74 × 74 =
  2. 2.56 × 59 =
  3. 3.82 × 81 =
  4. 4.58 × 58 =
  5. 5.91 × 92 =
  6. 6.56 × 57 =
  7. 7.16 × 16 =
  8. 8.76 × 79 =
  9. 9.36 × 39 =
  10. 10.79 × 79 =
  11. 11.64 × 62 =
  12. 12.94 × 92 =
  13. 13.32 × 33 =
  14. 14.88 × 88 =
  15. 15.46 × 48 =
  16. 16.66 × 66 =
  17. 17.19 × 17 =
  18. 18.34 × 32 =
  19. 19.195 × 195 =
  20. 20.73 × 73 =
  21. 21.41 × 44 =
  22. 22.27 × 26 =
  23. 23.88 × 89 =
  24. 24.47 × 48 =
  25. 25.36 × 36 =
  26. 26.595 × 594 =
  27. 27.606 × 604 =
  28. 28.31 × 32 =
  29. 29.69 × 67 =
  30. 30.203 × 202 =
  31. 31.294 × 296 =
  32. 32.39 × 36 =
  33. 33.71 × 71 =
  34. 34.297 × 298 =
  35. 35.493 × 491 =
  36. 36.42 × 41 =
  37. 37.396 × 396 =
  38. 38.304 × 309 =
  39. 39.608 × 608 =
  40. 40.208 × 201 =

Answer key

  1. 5476
  2. 3304
  3. 6642
  4. 3364
  5. 8372
  6. 3192
  7. 256
  8. 6004
  9. 1404
  10. 6241
  11. 3968
  12. 8648
  13. 1056
  14. 7744
  15. 2208
  16. 4356
  17. 323
  18. 1088
  19. 38025
  20. 5329
  21. 1804
  22. 702
  23. 7832
  24. 2256
  25. 1296
  26. 353430
  27. 366024
  28. 992
  29. 4623
  30. 41006
  31. 87024
  32. 1404
  33. 5041
  34. 88506
  35. 242063
  36. 1722
  37. 156816
  38. 93936
  39. 369664
  40. 41808

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