Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 691 · 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. 1.302 × 303 =
2. 2.82 × 82 =
3. 3.608 × 608 =
4. 4.67 × 66 =
5. 5.24 × 24 =
6. 6.197 × 191 =
7. 7.19 × 18 =
8. 8.509 × 505 =
9. 9.398 × 391 =
10. 10.36 × 38 =
11. 11.391 × 393 =
12. 12.598 × 599 =
13. 13.16 × 18 =
14. 14.19 × 17 =
15. 15.78 × 77 =
16. 16.305 × 307 =
17. 17.46 × 48 =
18. 18.398 × 394 =
19. 19.197 × 194 =
20. 20.498 × 498 =
21. 21.27 × 26 =
22. 22.207 × 207 =
23. 23.495 × 498 =
24. 24.68 × 66 =
25. 25.509 × 507 =
26. 26.197 × 196 =
27. 27.32 × 33 =
28. 28.74 × 74 =
29. 29.21 × 22 =
30. 30.92 × 92 =
31. 31.41 × 43 =
32. 32.601 × 607 =
33. 33.66 × 69 =
34. 34.41 × 42 =
35. 35.38 × 38 =
36. 36.297 × 292 =
37. 37.67 × 68 =
38. 38.31 × 32 =
39. 39.36 × 36 =
40. 40.44 × 42 =

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