Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 64 · 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 × 67 =
2. 2.41 × 41 =
3. 3.43 × 41 =
4. 4.21 × 23 =
5. 5.192 × 191 =
6. 6.68 × 68 =
7. 7.503 × 509 =
8. 8.41 × 41 =
9. 9.82 × 81 =
10. 10.44 × 41 =
11. 11.396 × 394 =
12. 12.203 × 208 =
13. 13.27 × 28 =
14. 14.26 × 28 =
15. 15.402 × 402 =
16. 16.79 × 79 =
17. 17.203 × 205 =
18. 18.84 × 84 =
19. 19.197 × 197 =
20. 20.406 × 405 =
21. 21.403 × 403 =
22. 22.32 × 33 =
23. 23.497 × 495 =
24. 24.405 × 401 =
25. 25.191 × 192 =
26. 26.93 × 94 =
27. 27.304 × 304 =
28. 28.504 × 502 =
29. 29.603 × 603 =
30. 30.401 × 401 =
31. 31.83 × 82 =
32. 32.78 × 78 =
33. 33.591 × 591 =
34. 34.401 × 409 =
35. 35.17 × 18 =
36. 36.88 × 88 =
37. 37.194 × 194 =
38. 38.32 × 33 =
39. 39.297 × 292 =
40. 40.204 × 204 =

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