Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 230 · 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. 1.68 × 66 =
2. 2.57 × 57 =
3. 3.193 × 194 =
4. 4.492 × 497 =
5. 5.39 × 39 =
6. 6.602 × 603 =
7. 7.66 × 69 =
8. 8.204 × 207 =
9. 9.192 × 199 =
10. 10.76 × 78 =
11. 11.606 × 609 =
12. 12.207 × 202 =
13. 13.202 × 208 =
14. 14.397 × 393 =
15. 15.17 × 18 =
16. 16.28 × 29 =
17. 17.297 × 293 =
18. 18.491 × 492 =
19. 19.47 × 48 =
20. 20.599 × 591 =
21. 21.194 × 198 =
22. 22.21 × 21 =
23. 23.81 × 83 =
24. 24.32 × 33 =
25. 25.291 × 293 =
26. 26.492 × 498 =
27. 27.197 × 198 =
28. 28.409 × 406 =
29. 29.26 × 29 =
30. 30.507 × 507 =
31. 31.63 × 62 =
32. 32.79 × 79 =
33. 33.72 × 74 =
34. 34.51 × 52 =
35. 35.39 × 39 =
36. 36.503 × 504 =
37. 37.502 × 505 =
38. 38.27 × 29 =
39. 39.29 × 29 =
40. 40.83 × 82 =

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