Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 353 · 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. 1.17 × 18 =
2. 2.502 × 502 =
3. 3.602 × 602 =
4. 4.301 × 304 =
5. 5.71 × 74 =
6. 6.395 × 398 =
7. 7.392 × 391 =
8. 8.298 × 292 =
9. 9.91 × 92 =
10. 10.33 × 32 =
11. 11.37 × 38 =
12. 12.79 × 78 =
13. 13.295 × 295 =
14. 14.308 × 302 =
15. 15.89 × 89 =
16. 16.497 × 495 =
17. 17.207 × 209 =
18. 18.293 × 292 =
19. 19.294 × 299 =
20. 20.77 × 76 =
21. 21.86 × 88 =
22. 22.42 × 43 =
23. 23.91 × 94 =
24. 24.43 × 43 =
25. 25.93 × 92 =
26. 26.392 × 396 =
27. 27.499 × 491 =
28. 28.299 × 298 =
29. 29.291 × 299 =
30. 30.51 × 54 =
31. 31.67 × 66 =
32. 32.203 × 209 =
33. 33.605 × 604 =
34. 34.17 × 17 =
35. 35.81 × 83 =
36. 36.497 × 494 =
37. 37.501 × 502 =
38. 38.63 × 63 =
39. 39.51 × 54 =
40. 40.408 × 404 =

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