Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 157 · 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. 1.499 × 491 =
2. 2.495 × 492 =
3. 3.92 × 91 =
4. 4.403 × 409 =
5. 5.51 × 52 =
6. 6.54 × 53 =
7. 7.508 × 502 =
8. 8.74 × 74 =
9. 9.502 × 506 =
10. 10.404 × 409 =
11. 11.404 × 401 =
12. 12.63 × 61 =
13. 13.193 × 192 =
14. 14.83 × 82 =
15. 15.398 × 399 =
16. 16.407 × 409 =
17. 17.301 × 307 =
18. 18.89 × 89 =
19. 19.41 × 44 =
20. 20.509 × 507 =
21. 21.493 × 494 =
22. 22.597 × 599 =
23. 23.68 × 67 =
24. 24.43 × 43 =
25. 25.199 × 194 =
26. 26.74 × 73 =
27. 27.403 × 405 =
28. 28.602 × 602 =
29. 29.39 × 39 =
30. 30.46 × 48 =
31. 31.301 × 302 =
32. 32.92 × 91 =
33. 33.66 × 68 =
34. 34.51 × 51 =
35. 35.88 × 89 =
36. 36.392 × 392 =
37. 37.92 × 91 =
38. 38.17 × 19 =
39. 39.56 × 58 =
40. 40.19 × 18 =

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