Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 905 · 40 sums

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).

1. 1.21 × 21 =
2. 2.67 × 67 =
3. 3.199 × 199 =
4. 4.26 × 27 =
5. 5.392 × 396 =
6. 6.18 × 17 =
7. 7.195 × 192 =
8. 8.407 × 406 =
9. 9.68 × 66 =
10. 10.32 × 33 =
11. 11.592 × 599 =
12. 12.84 × 82 =
13. 13.19 × 18 =
14. 14.404 × 403 =
15. 15.492 × 494 =
16. 16.17 × 16 =
17. 17.406 × 406 =
18. 18.293 × 295 =
19. 19.49 × 49 =
20. 20.608 × 605 =
21. 21.509 × 507 =
22. 22.198 × 192 =
23. 23.58 × 59 =
24. 24.203 × 205 =
25. 25.502 × 507 =
26. 26.32 × 32 =
27. 27.399 × 392 =
28. 28.94 × 93 =
29. 29.291 × 293 =
30. 30.205 × 205 =
31. 31.507 × 509 =
32. 32.72 × 71 =
33. 33.307 × 304 =
34. 34.395 × 399 =
35. 35.403 × 403 =
36. 36.192 × 192 =
37. 37.82 × 84 =
38. 38.36 × 38 =
39. 39.405 × 401 =
40. 40.78 × 78 =

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