Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 182 · 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 × 68 =
2. 2.206 × 207 =
3. 3.594 × 599 =
4. 4.91 × 91 =
5. 5.32 × 34 =
6. 6.93 × 92 =
7. 7.79 × 78 =
8. 8.501 × 507 =
9. 9.88 × 88 =
10. 10.405 × 401 =
11. 11.509 × 505 =
12. 12.297 × 294 =
13. 13.23 × 22 =
14. 14.24 × 22 =
15. 15.61 × 63 =
16. 16.69 × 69 =
17. 17.405 × 404 =
18. 18.499 × 491 =
19. 19.94 × 91 =
20. 20.92 × 91 =
21. 21.68 × 68 =
22. 22.52 × 51 =
23. 23.293 × 296 =
24. 24.304 × 308 =
25. 25.67 × 66 =
26. 26.494 × 492 =
27. 27.89 × 86 =
28. 28.28 × 29 =
29. 29.406 × 403 =
30. 30.18 × 17 =
31. 31.63 × 61 =
32. 32.82 × 81 =
33. 33.67 × 69 =
34. 34.19 × 19 =
35. 35.19 × 16 =
36. 36.88 × 89 =
37. 37.21 × 21 =
38. 38.39 × 36 =
39. 39.58 × 58 =
40. 40.36 × 38 =

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