Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 40 · 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. 1.81 × 81 =
2. 2.391 × 398 =
3. 3.24 × 22 =
4. 4.74 × 72 =
5. 5.505 × 507 =
6. 6.49 × 47 =
7. 7.87 × 88 =
8. 8.68 × 66 =
9. 9.402 × 408 =
10. 10.403 × 404 =
11. 11.63 × 62 =
12. 12.57 × 57 =
13. 13.596 × 591 =
14. 14.72 × 72 =
15. 15.42 × 41 =
16. 16.38 × 36 =
17. 17.19 × 17 =
18. 18.208 × 203 =
19. 19.409 × 404 =
20. 20.61 × 62 =
21. 21.77 × 78 =
22. 22.78 × 79 =
23. 23.491 × 492 =
24. 24.43 × 43 =
25. 25.197 × 195 =
26. 26.93 × 91 =
27. 27.39 × 37 =
28. 28.199 × 199 =
29. 29.198 × 199 =
30. 30.191 × 199 =
31. 31.206 × 206 =
32. 32.508 × 509 =
33. 33.38 × 36 =
34. 34.202 × 202 =
35. 35.62 × 61 =
36. 36.292 × 293 =
37. 37.399 × 395 =
38. 38.609 × 607 =
39. 39.23 × 24 =
40. 40.401 × 402 =

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