Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 550 · 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. 1.83 × 83 =
2. 2.48 × 49 =
3. 3.56 × 57 =
4. 4.21 × 21 =
5. 5.91 × 92 =
6. 6.78 × 78 =
7. 7.51 × 54 =
8. 8.16 × 17 =
9. 9.394 × 398 =
10. 10.16 × 19 =
11. 11.88 × 86 =
12. 12.54 × 51 =
13. 13.36 × 39 =
14. 14.82 × 81 =
15. 15.596 × 595 =
16. 16.397 × 393 =
17. 17.303 × 303 =
18. 18.192 × 198 =
19. 19.51 × 53 =
20. 20.396 × 398 =
21. 21.494 × 495 =
22. 22.495 × 496 =
23. 23.61 × 64 =
24. 24.496 × 491 =
25. 25.499 × 492 =
26. 26.39 × 36 =
27. 27.76 × 76 =
28. 28.56 × 59 =
29. 29.204 × 202 =
30. 30.72 × 74 =
31. 31.409 × 401 =
32. 32.491 × 499 =
33. 33.83 × 81 =
34. 34.58 × 58 =
35. 35.68 × 69 =
36. 36.53 × 51 =
37. 37.59 × 59 =
38. 38.16 × 17 =
39. 39.391 × 392 =
40. 40.57 × 59 =

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