Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 251 · 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. 1.66 × 66 =
2. 2.391 × 398 =
3. 3.37 × 38 =
4. 4.17 × 19 =
5. 5.37 × 39 =
6. 6.39 × 39 =
7. 7.508 × 506 =
8. 8.52 × 51 =
9. 9.293 × 298 =
10. 10.54 × 52 =
11. 11.38 × 38 =
12. 12.87 × 88 =
13. 13.78 × 78 =
14. 14.88 × 87 =
15. 15.41 × 42 =
16. 16.404 × 406 =
17. 17.36 × 38 =
18. 18.401 × 403 =
19. 19.605 × 606 =
20. 20.27 × 29 =
21. 21.501 × 509 =
22. 22.208 × 208 =
23. 23.205 × 208 =
24. 24.84 × 81 =
25. 25.202 × 202 =
26. 26.192 × 192 =
27. 27.48 × 46 =
28. 28.37 × 38 =
29. 29.92 × 91 =
30. 30.53 × 53 =
31. 31.402 × 409 =
32. 32.49 × 48 =
33. 33.61 × 61 =
34. 34.89 × 89 =
35. 35.76 × 79 =
36. 36.47 × 47 =
37. 37.201 × 209 =
38. 38.68 × 67 =
39. 39.38 × 39 =
40. 40.41 × 41 =

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