Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 442 · 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. 1.66 × 67 =
2. 2.603 × 609 =
3. 3.32 × 31 =
4. 4.92 × 92 =
5. 5.599 × 591 =
6. 6.89 × 87 =
7. 7.58 × 56 =
8. 8.92 × 91 =
9. 9.42 × 44 =
10. 10.21 × 22 =
11. 11.53 × 52 =
12. 12.591 × 595 =
13. 13.505 × 507 =
14. 14.48 × 48 =
15. 15.78 × 76 =
16. 16.47 × 46 =
17. 17.191 × 191 =
18. 18.396 × 399 =
19. 19.56 × 58 =
20. 20.201 × 205 =
21. 21.41 × 41 =
22. 22.206 × 208 =
23. 23.56 × 57 =
24. 24.204 × 208 =
25. 25.502 × 508 =
26. 26.203 × 203 =
27. 27.82 × 81 =
28. 28.19 × 18 =
29. 29.597 × 599 =
30. 30.42 × 41 =
31. 31.398 × 398 =
32. 32.82 × 84 =
33. 33.607 × 605 =
34. 34.17 × 19 =
35. 35.503 × 506 =
36. 36.18 × 19 =
37. 37.195 × 191 =
38. 38.73 × 71 =
39. 39.28 × 29 =
40. 40.94 × 91 =

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