Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 41 · 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. 1.38 × 38 =
2. 2.399 × 397 =
3. 3.78 × 78 =
4. 4.405 × 403 =
5. 5.598 × 593 =
6. 6.397 × 398 =
7. 7.608 × 602 =
8. 8.47 × 47 =
9. 9.406 × 401 =
10. 10.594 × 593 =
11. 11.92 × 91 =
12. 12.607 × 603 =
13. 13.63 × 62 =
14. 14.18 × 18 =
15. 15.21 × 22 =
16. 16.17 × 17 =
17. 17.83 × 84 =
18. 18.302 × 304 =
19. 19.26 × 28 =
20. 20.293 × 291 =
21. 21.32 × 34 =
22. 22.498 × 495 =
23. 23.64 × 63 =
24. 24.301 × 308 =
25. 25.63 × 64 =
26. 26.42 × 42 =
27. 27.405 × 408 =
28. 28.41 × 43 =
29. 29.299 × 299 =
30. 30.196 × 199 =
31. 31.23 × 21 =
32. 32.393 × 394 =
33. 33.54 × 53 =
34. 34.79 × 77 =
35. 35.66 × 67 =
36. 36.39 × 39 =
37. 37.503 × 507 =
38. 38.47 × 46 =
39. 39.203 × 207 =
40. 40.392 × 399 =

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