Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 320 · 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. 1.504 × 509 =
2. 2.87 × 86 =
3. 3.57 × 58 =
4. 4.36 × 37 =
5. 5.497 × 498 =
6. 6.391 × 392 =
7. 7.61 × 63 =
8. 8.37 × 39 =
9. 9.88 × 88 =
10. 10.77 × 79 =
11. 11.53 × 54 =
12. 12.72 × 71 =
13. 13.92 × 92 =
14. 14.66 × 68 =
15. 15.492 × 492 =
16. 16.508 × 506 =
17. 17.52 × 53 =
18. 18.18 × 19 =
19. 19.502 × 503 =
20. 20.408 × 407 =
21. 21.396 × 397 =
22. 22.29 × 27 =
23. 23.498 × 495 =
24. 24.498 × 498 =
25. 25.299 × 295 =
26. 26.297 × 296 =
27. 27.497 × 492 =
28. 28.37 × 36 =
29. 29.398 × 397 =
30. 30.31 × 34 =
31. 31.94 × 91 =
32. 32.19 × 16 =
33. 33.89 × 87 =
34. 34.17 × 18 =
35. 35.293 × 295 =
36. 36.86 × 89 =
37. 37.51 × 53 =
38. 38.66 × 69 =
39. 39.44 × 41 =
40. 40.92 × 93 =

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