Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 47 · 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. 1.28 × 27 =
2. 2.198 × 196 =
3. 3.36 × 36 =
4. 4.86 × 89 =
5. 5.58 × 58 =
6. 6.18 × 18 =
7. 7.304 × 301 =
8. 8.607 × 601 =
9. 9.409 × 402 =
10. 10.68 × 67 =
11. 11.297 × 299 =
12. 12.18 × 17 =
13. 13.498 × 499 =
14. 14.493 × 493 =
15. 15.18 × 19 =
16. 16.504 × 506 =
17. 17.602 × 609 =
18. 18.59 × 58 =
19. 19.196 × 194 =
20. 20.36 × 36 =
21. 21.506 × 504 =
22. 22.292 × 298 =
23. 23.46 × 49 =
24. 24.29 × 27 =
25. 25.64 × 63 =
26. 26.196 × 192 =
27. 27.78 × 79 =
28. 28.73 × 71 =
29. 29.71 × 71 =
30. 30.33 × 33 =
31. 31.201 × 205 =
32. 32.302 × 303 =
33. 33.51 × 51 =
34. 34.16 × 18 =
35. 35.504 × 503 =
36. 36.84 × 81 =
37. 37.298 × 292 =
38. 38.17 × 16 =
39. 39.68 × 67 =
40. 40.401 × 402 =

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