Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 458 · 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. 2.31 × 31 =
3. 3.192 × 198 =
4. 4.191 × 195 =
5. 5.16 × 17 =
6. 6.609 × 604 =
7. 7.43 × 43 =
8. 8.18 × 19 =
9. 9.309 × 307 =
10. 10.396 × 391 =
11. 11.391 × 393 =
12. 12.499 × 499 =
13. 13.27 × 28 =
14. 14.598 × 597 =
15. 15.602 × 605 =
16. 16.299 × 297 =
17. 17.598 × 596 =
18. 18.404 × 405 =
19. 19.602 × 603 =
20. 20.43 × 43 =
21. 21.305 × 303 =
22. 22.603 × 607 =
23. 23.202 × 206 =
24. 24.198 × 198 =
25. 25.28 × 29 =
26. 26.87 × 89 =
27. 27.71 × 73 =
28. 28.26 × 27 =
29. 29.61 × 64 =
30. 30.395 × 394 =
31. 31.204 × 205 =
32. 32.596 × 592 =
33. 33.18 × 19 =
34. 34.191 × 197 =
35. 35.293 × 298 =
36. 36.29 × 26 =
37. 37.18 × 16 =
38. 38.77 × 77 =
39. 39.307 × 301 =
40. 40.604 × 605 =

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