Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 671 · 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. 1.408 × 406 =
2. 2.494 × 495 =
3. 3.397 × 391 =
4. 4.78 × 78 =
5. 5.74 × 73 =
6. 6.28 × 28 =
7. 7.21 × 21 =
8. 8.17 × 18 =
9. 9.393 × 397 =
10. 10.31 × 32 =
11. 11.38 × 37 =
12. 12.66 × 68 =
13. 13.397 × 392 =
14. 14.597 × 593 =
15. 15.71 × 74 =
16. 16.31 × 31 =
17. 17.18 × 18 =
18. 18.92 × 94 =
19. 19.87 × 86 =
20. 20.17 × 19 =
21. 21.195 × 193 =
22. 22.294 × 298 =
23. 23.607 × 602 =
24. 24.36 × 39 =
25. 25.496 × 499 =
26. 26.499 × 493 =
27. 27.66 × 68 =
28. 28.43 × 44 =
29. 29.36 × 37 =
30. 30.306 × 304 =
31. 31.493 × 495 =
32. 32.82 × 83 =
33. 33.43 × 43 =
34. 34.28 × 26 =
35. 35.44 × 43 =
36. 36.299 × 292 =
37. 37.61 × 61 =
38. 38.31 × 31 =
39. 39.397 × 397 =
40. 40.604 × 603 =

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