Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 545 · 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. 1.69 × 69 =
2. 2.402 × 404 =
3. 3.191 × 198 =
4. 4.27 × 26 =
5. 5.603 × 609 =
6. 6.29 × 27 =
7. 7.61 × 64 =
8. 8.305 × 309 =
9. 9.43 × 43 =
10. 10.43 × 41 =
11. 11.46 × 49 =
12. 12.51 × 54 =
13. 13.77 × 78 =
14. 14.605 × 605 =
15. 15.94 × 93 =
16. 16.503 × 509 =
17. 17.492 × 499 =
18. 18.77 × 76 =
19. 19.394 × 392 =
20. 20.21 × 23 =
21. 21.403 × 402 =
22. 22.71 × 71 =
23. 23.28 × 27 =
24. 24.591 × 592 =
25. 25.83 × 83 =
26. 26.204 × 208 =
27. 27.39 × 39 =
28. 28.201 × 207 =
29. 29.16 × 17 =
30. 30.504 × 508 =
31. 31.16 × 19 =
32. 32.83 × 84 =
33. 33.504 × 501 =
34. 34.47 × 49 =
35. 35.191 × 198 =
36. 36.51 × 54 =
37. 37.501 × 507 =
38. 38.502 × 508 =
39. 39.403 × 401 =
40. 40.195 × 193 =

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