Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 284 · 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. 1.78 × 77 =
2. 2.73 × 71 =
3. 3.84 × 82 =
4. 4.41 × 41 =
5. 5.26 × 28 =
6. 6.496 × 494 =
7. 7.34 × 34 =
8. 8.203 × 208 =
9. 9.88 × 88 =
10. 10.504 × 503 =
11. 11.48 × 49 =
12. 12.68 × 68 =
13. 13.301 × 302 =
14. 14.84 × 84 =
15. 15.301 × 307 =
16. 16.91 × 94 =
17. 17.394 × 399 =
18. 18.26 × 26 =
19. 19.71 × 72 =
20. 20.294 × 297 =
21. 21.397 × 392 =
22. 22.599 × 592 =
23. 23.91 × 92 =
24. 24.392 × 398 =
25. 25.49 × 46 =
26. 26.51 × 54 =
27. 27.79 × 76 =
28. 28.395 × 391 =
29. 29.94 × 91 =
30. 30.69 × 67 =
31. 31.46 × 49 =
32. 32.493 × 495 =
33. 33.61 × 61 =
34. 34.24 × 21 =
35. 35.43 × 42 =
36. 36.39 × 39 =
37. 37.593 × 596 =
38. 38.393 × 395 =
39. 39.607 × 602 =
40. 40.73 × 72 =

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