Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 515 · 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. 1.603 × 604 =
2. 2.293 × 293 =
3. 3.608 × 608 =
4. 4.28 × 28 =
5. 5.59 × 58 =
6. 6.294 × 295 =
7. 7.82 × 81 =
8. 8.91 × 91 =
9. 9.299 × 295 =
10. 10.202 × 204 =
11. 11.398 × 396 =
12. 12.392 × 396 =
13. 13.16 × 18 =
14. 14.498 × 492 =
15. 15.397 × 397 =
16. 16.594 × 591 =
17. 17.72 × 71 =
18. 18.409 × 403 =
19. 19.22 × 23 =
20. 20.19 × 17 =
21. 21.292 × 294 =
22. 22.58 × 58 =
23. 23.309 × 306 =
24. 24.73 × 73 =
25. 25.291 × 295 =
26. 26.609 × 607 =
27. 27.79 × 77 =
28. 28.598 × 599 =
29. 29.23 × 24 =
30. 30.49 × 48 =
31. 31.606 × 603 =
32. 32.69 × 69 =
33. 33.69 × 66 =
34. 34.62 × 64 =
35. 35.28 × 29 =
36. 36.208 × 207 =
37. 37.195 × 197 =
38. 38.404 × 405 =
39. 39.57 × 59 =
40. 40.507 × 509 =

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