Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 89 · 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. 1.39 × 39 =
2. 2.599 × 597 =
3. 3.397 × 396 =
4. 4.195 × 192 =
5. 5.61 × 61 =
6. 6.86 × 89 =
7. 7.72 × 73 =
8. 8.502 × 501 =
9. 9.47 × 46 =
10. 10.16 × 18 =
11. 11.44 × 41 =
12. 12.206 × 209 =
13. 13.402 × 405 =
14. 14.88 × 86 =
15. 15.393 × 392 =
16. 16.204 × 205 =
17. 17.208 × 207 =
18. 18.192 × 192 =
19. 19.493 × 497 =
20. 20.605 × 605 =
21. 21.593 × 597 =
22. 22.64 × 63 =
23. 23.402 × 409 =
24. 24.504 × 501 =
25. 25.87 × 88 =
26. 26.61 × 63 =
27. 27.88 × 86 =
28. 28.205 × 205 =
29. 29.49 × 46 =
30. 30.29 × 26 =
31. 31.22 × 22 =
32. 32.16 × 16 =
33. 33.406 × 403 =
34. 34.605 × 602 =
35. 35.306 × 304 =
36. 36.68 × 69 =
37. 37.71 × 71 =
38. 38.291 × 297 =
39. 39.59 × 59 =
40. 40.201 × 205 =

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