Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 610 · 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. 1.409 × 402 =
2. 2.203 × 207 =
3. 3.21 × 22 =
4. 4.509 × 504 =
5. 5.594 × 597 =
6. 6.406 × 405 =
7. 7.94 × 92 =
8. 8.29 × 29 =
9. 9.49 × 48 =
10. 10.41 × 44 =
11. 11.28 × 28 =
12. 12.401 × 403 =
13. 13.26 × 29 =
14. 14.67 × 69 =
15. 15.79 × 78 =
16. 16.293 × 294 =
17. 17.67 × 66 =
18. 18.68 × 69 =
19. 19.296 × 298 =
20. 20.607 × 607 =
21. 21.306 × 309 =
22. 22.33 × 31 =
23. 23.17 × 18 =
24. 24.299 × 297 =
25. 25.202 × 206 =
26. 26.16 × 18 =
27. 27.42 × 44 =
28. 28.64 × 63 =
29. 29.409 × 402 =
30. 30.394 × 393 =
31. 31.71 × 73 =
32. 32.31 × 34 =
33. 33.607 × 602 =
34. 34.36 × 38 =
35. 35.398 × 398 =
36. 36.36 × 39 =
37. 37.89 × 86 =
38. 38.42 × 43 =
39. 39.48 × 48 =
40. 40.194 × 195 =

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