Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 313 · 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. 1.609 × 604 =
2. 2.78 × 79 =
3. 3.91 × 92 =
4. 4.592 × 591 =
5. 5.502 × 504 =
6. 6.39 × 39 =
7. 7.33 × 32 =
8. 8.84 × 83 =
9. 9.49 × 48 =
10. 10.16 × 18 =
11. 11.62 × 61 =
12. 12.91 × 94 =
13. 13.83 × 84 =
14. 14.399 × 397 =
15. 15.198 × 199 =
16. 16.407 × 404 =
17. 17.81 × 83 =
18. 18.18 × 17 =
19. 19.19 × 17 =
20. 20.54 × 54 =
21. 21.508 × 506 =
22. 22.24 × 21 =
23. 23.76 × 77 =
24. 24.28 × 29 =
25. 25.89 × 86 =
26. 26.21 × 21 =
27. 27.201 × 203 =
28. 28.402 × 402 =
29. 29.48 × 46 =
30. 30.17 × 18 =
31. 31.43 × 41 =
32. 32.87 × 86 =
33. 33.43 × 43 =
34. 34.498 × 492 =
35. 35.31 × 31 =
36. 36.48 × 46 =
37. 37.59 × 58 =
38. 38.209 × 201 =
39. 39.398 × 399 =
40. 40.53 × 51 =

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