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Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 142 · 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. 1.76 × 78 =
  2. 2.33 × 34 =
  3. 3.292 × 294 =
  4. 4.58 × 56 =
  5. 5.506 × 507 =
  6. 6.194 × 193 =
  7. 7.395 × 399 =
  8. 8.59 × 56 =
  9. 9.298 × 293 =
  10. 10.608 × 606 =
  11. 11.88 × 88 =
  12. 12.89 × 88 =
  13. 13.307 × 302 =
  14. 14.194 × 197 =
  15. 15.68 × 68 =
  16. 16.59 × 58 =
  17. 17.297 × 294 =
  18. 18.56 × 59 =
  19. 19.394 × 391 =
  20. 20.73 × 72 =
  21. 21.51 × 53 =
  22. 22.593 × 594 =
  23. 23.33 × 32 =
  24. 24.494 × 499 =
  25. 25.57 × 57 =
  26. 26.16 × 18 =
  27. 27.291 × 294 =
  28. 28.204 × 206 =
  29. 29.294 × 292 =
  30. 30.494 × 498 =
  31. 31.507 × 502 =
  32. 32.507 × 507 =
  33. 33.195 × 198 =
  34. 34.19 × 19 =
  35. 35.593 × 599 =
  36. 36.23 × 24 =
  37. 37.507 × 502 =
  38. 38.44 × 42 =
  39. 39.92 × 94 =
  40. 40.61 × 62 =

Answer key

  1. 5928
  2. 1122
  3. 85848
  4. 3248
  5. 256542
  6. 37442
  7. 157605
  8. 3304
  9. 87314
  10. 368448
  11. 7744
  12. 7832
  13. 92714
  14. 38218
  15. 4624
  16. 3422
  17. 87318
  18. 3304
  19. 154054
  20. 5256
  21. 2703
  22. 352242
  23. 1056
  24. 246506
  25. 3249
  26. 288
  27. 85554
  28. 42024
  29. 85848
  30. 246012
  31. 254514
  32. 257049
  33. 38610
  34. 361
  35. 355207
  36. 552
  37. 254514
  38. 1848
  39. 8648
  40. 3782

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