Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 991 · 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. 1.491 × 497 =
2. 2.42 × 44 =
3. 3.67 × 69 =
4. 4.46 × 46 =
5. 5.19 × 18 =
6. 6.504 × 506 =
7. 7.309 × 306 =
8. 8.496 × 497 =
9. 9.292 × 295 =
10. 10.23 × 21 =
11. 11.49 × 49 =
12. 12.27 × 27 =
13. 13.59 × 57 =
14. 14.597 × 593 =
15. 15.61 × 63 =
16. 16.404 × 406 =
17. 17.61 × 64 =
18. 18.74 × 72 =
19. 19.57 × 56 =
20. 20.82 × 81 =
21. 21.79 × 76 =
22. 22.31 × 31 =
23. 23.66 × 68 =
24. 24.499 × 498 =
25. 25.201 × 203 =
26. 26.33 × 31 =
27. 27.79 × 78 =
28. 28.33 × 34 =
29. 29.401 × 401 =
30. 30.43 × 42 =
31. 31.496 × 496 =
32. 32.78 × 76 =
33. 33.509 × 508 =
34. 34.67 × 68 =
35. 35.77 × 77 =
36. 36.54 × 54 =
37. 37.67 × 69 =
38. 38.298 × 291 =
39. 39.33 × 32 =
40. 40.403 × 403 =

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