Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 67 · 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. 1.192 × 193 =
2. 2.16 × 17 =
3. 3.82 × 81 =
4. 4.509 × 503 =
5. 5.505 × 509 =
6. 6.61 × 61 =
7. 7.601 × 606 =
8. 8.42 × 42 =
9. 9.32 × 31 =
10. 10.88 × 86 =
11. 11.74 × 74 =
12. 12.66 × 66 =
13. 13.61 × 63 =
14. 14.196 × 192 =
15. 15.293 × 296 =
16. 16.502 × 503 =
17. 17.492 × 493 =
18. 18.296 × 291 =
19. 19.296 × 292 =
20. 20.397 × 397 =
21. 21.591 × 598 =
22. 22.18 × 17 =
23. 23.19 × 17 =
24. 24.501 × 508 =
25. 25.82 × 81 =
26. 26.606 × 601 =
27. 27.38 × 37 =
28. 28.208 × 204 =
29. 29.196 × 198 =
30. 30.93 × 94 =
31. 31.306 × 302 =
32. 32.307 × 309 =
33. 33.28 × 28 =
34. 34.27 × 28 =
35. 35.408 × 404 =
36. 36.497 × 494 =
37. 37.309 × 306 =
38. 38.58 × 56 =
39. 39.88 × 87 =
40. 40.69 × 68 =

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