Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 407 · 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. 1.87 × 89 =
2. 2.599 × 598 =
3. 3.596 × 597 =
4. 4.491 × 496 =
5. 5.297 × 296 =
6. 6.23 × 23 =
7. 7.292 × 292 =
8. 8.77 × 77 =
9. 9.29 × 27 =
10. 10.307 × 309 =
11. 11.38 × 37 =
12. 12.29 × 28 =
13. 13.198 × 192 =
14. 14.43 × 42 =
15. 15.508 × 505 =
16. 16.291 × 296 =
17. 17.81 × 83 =
18. 18.497 × 499 =
19. 19.604 × 602 =
20. 20.307 × 302 =
21. 21.403 × 401 =
22. 22.309 × 308 =
23. 23.403 × 402 =
24. 24.409 × 408 =
25. 25.66 × 69 =
26. 26.84 × 84 =
27. 27.27 × 28 =
28. 28.193 × 197 =
29. 29.68 × 69 =
30. 30.605 × 602 =
31. 31.74 × 71 =
32. 32.39 × 39 =
33. 33.87 × 88 =
34. 34.51 × 53 =
35. 35.193 × 199 =
36. 36.399 × 393 =
37. 37.497 × 497 =
38. 38.19 × 17 =
39. 39.59 × 57 =
40. 40.22 × 23 =

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