Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 678 · 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. 1.82 × 82 =
2. 2.409 × 406 =
3. 3.201 × 206 =
4. 4.406 × 409 =
5. 5.199 × 191 =
6. 6.202 × 209 =
7. 7.71 × 74 =
8. 8.42 × 44 =
9. 9.491 × 493 =
10. 10.492 × 497 =
11. 11.491 × 495 =
12. 12.79 × 77 =
13. 13.409 × 409 =
14. 14.53 × 52 =
15. 15.36 × 39 =
16. 16.88 × 89 =
17. 17.78 × 79 =
18. 18.29 × 29 =
19. 19.28 × 28 =
20. 20.37 × 39 =
21. 21.66 × 69 =
22. 22.17 × 18 =
23. 23.16 × 18 =
24. 24.16 × 19 =
25. 25.299 × 295 =
26. 26.203 × 203 =
27. 27.34 × 32 =
28. 28.402 × 403 =
29. 29.63 × 64 =
30. 30.69 × 68 =
31. 31.94 × 93 =
32. 32.29 × 28 =
33. 33.395 × 391 =
34. 34.54 × 53 =
35. 35.17 × 19 =
36. 36.506 × 506 =
37. 37.22 × 22 =
38. 38.33 × 33 =
39. 39.207 × 206 =
40. 40.196 × 192 =

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