Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 250 · 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. 1.17 × 19 =
2. 2.38 × 37 =
3. 3.199 × 197 =
4. 4.62 × 64 =
5. 5.405 × 405 =
6. 6.39 × 39 =
7. 7.301 × 302 =
8. 8.201 × 208 =
9. 9.32 × 31 =
10. 10.82 × 84 =
11. 11.42 × 43 =
12. 12.34 × 34 =
13. 13.22 × 24 =
14. 14.206 × 209 =
15. 15.398 × 394 =
16. 16.201 × 204 =
17. 17.94 × 94 =
18. 18.84 × 82 =
19. 19.64 × 64 =
20. 20.505 × 502 =
21. 21.297 × 293 =
22. 22.503 × 504 =
23. 23.61 × 64 =
24. 24.605 × 609 =
25. 25.605 × 608 =
26. 26.21 × 22 =
27. 27.39 × 36 =
28. 28.501 × 508 =
29. 29.509 × 507 =
30. 30.391 × 398 =
31. 31.79 × 78 =
32. 32.89 × 86 =
33. 33.492 × 492 =
34. 34.34 × 34 =
35. 35.408 × 406 =
36. 36.598 × 592 =
37. 37.501 × 509 =
38. 38.22 × 23 =
39. 39.21 × 23 =
40. 40.602 × 607 =

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