Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 243 · 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. 1.66 × 67 =
2. 2.48 × 46 =
3. 3.19 × 17 =
4. 4.409 × 407 =
5. 5.603 × 604 =
6. 6.492 × 496 =
7. 7.92 × 94 =
8. 8.296 × 298 =
9. 9.19 × 16 =
10. 10.66 × 69 =
11. 11.603 × 605 =
12. 12.21 × 21 =
13. 13.67 × 68 =
14. 14.36 × 38 =
15. 15.64 × 61 =
16. 16.62 × 61 =
17. 17.61 × 61 =
18. 18.492 × 494 =
19. 19.39 × 38 =
20. 20.497 × 491 =
21. 21.22 × 22 =
22. 22.49 × 49 =
23. 23.56 × 57 =
24. 24.22 × 23 =
25. 25.27 × 28 =
26. 26.404 × 402 =
27. 27.494 × 494 =
28. 28.83 × 84 =
29. 29.31 × 31 =
30. 30.31 × 32 =
31. 31.491 × 491 =
32. 32.206 × 207 =
33. 33.73 × 72 =
34. 34.22 × 21 =
35. 35.71 × 73 =
36. 36.41 × 41 =
37. 37.408 × 409 =
38. 38.199 × 197 =
39. 39.504 × 502 =
40. 40.28 × 29 =

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