Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 140 · 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. 1.71 × 73 =
2. 2.599 × 597 =
3. 3.66 × 67 =
4. 4.504 × 509 =
5. 5.86 × 89 =
6. 6.504 × 508 =
7. 7.33 × 32 =
8. 8.71 × 72 =
9. 9.193 × 199 =
10. 10.506 × 505 =
11. 11.17 × 17 =
12. 12.507 × 503 =
13. 13.22 × 23 =
14. 14.507 × 502 =
15. 15.298 × 293 =
16. 16.22 × 24 =
17. 17.53 × 51 =
18. 18.498 × 495 =
19. 19.599 × 599 =
20. 20.297 × 297 =
21. 21.59 × 59 =
22. 22.596 × 595 =
23. 23.22 × 22 =
24. 24.18 × 18 =
25. 25.205 × 201 =
26. 26.29 × 29 =
27. 27.17 × 16 =
28. 28.73 × 72 =
29. 29.393 × 394 =
30. 30.49 × 48 =
31. 31.52 × 54 =
32. 32.295 × 292 =
33. 33.398 × 395 =
34. 34.78 × 78 =
35. 35.408 × 403 =
36. 36.22 × 21 =
37. 37.61 × 63 =
38. 38.93 × 92 =
39. 39.294 × 295 =
40. 40.399 × 396 =

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