Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 638 · 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. 1.21 × 21 =
2. 2.31 × 31 =
3. 3.93 × 92 =
4. 4.26 × 29 =
5. 5.201 × 205 =
6. 6.16 × 16 =
7. 7.59 × 56 =
8. 8.397 × 394 =
9. 9.29 × 27 =
10. 10.22 × 22 =
11. 11.24 × 21 =
12. 12.194 × 198 =
13. 13.496 × 497 =
14. 14.509 × 503 =
15. 15.93 × 92 =
16. 16.83 × 82 =
17. 17.598 × 595 =
18. 18.37 × 38 =
19. 19.506 × 505 =
20. 20.34 × 31 =
21. 21.198 × 193 =
22. 22.81 × 82 =
23. 23.305 × 309 =
24. 24.501 × 509 =
25. 25.598 × 593 =
26. 26.505 × 505 =
27. 27.66 × 68 =
28. 28.17 × 16 =
29. 29.92 × 92 =
30. 30.43 × 44 =
31. 31.21 × 22 =
32. 32.18 × 19 =
33. 33.592 × 593 =
34. 34.39 × 36 =
35. 35.592 × 598 =
36. 36.392 × 396 =
37. 37.23 × 23 =
38. 38.507 × 501 =
39. 39.401 × 404 =
40. 40.72 × 71 =

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