Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 810 · 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. 1.81 × 82 =
2. 2.494 × 492 =
3. 3.59 × 59 =
4. 4.305 × 309 =
5. 5.69 × 68 =
6. 6.86 × 86 =
7. 7.293 × 291 =
8. 8.399 × 397 =
9. 9.73 × 73 =
10. 10.22 × 21 =
11. 11.402 × 402 =
12. 12.87 × 89 =
13. 13.402 × 404 =
14. 14.495 × 494 =
15. 15.201 × 208 =
16. 16.91 × 92 =
17. 17.18 × 17 =
18. 18.22 × 23 =
19. 19.498 × 493 =
20. 20.21 × 23 =
21. 21.89 × 89 =
22. 22.498 × 494 =
23. 23.86 × 86 =
24. 24.401 × 406 =
25. 25.494 × 493 =
26. 26.57 × 57 =
27. 27.68 × 66 =
28. 28.18 × 18 =
29. 29.605 × 604 =
30. 30.82 × 83 =
31. 31.494 × 491 =
32. 32.208 × 209 =
33. 33.69 × 66 =
34. 34.77 × 77 =
35. 35.84 × 83 =
36. 36.17 × 19 =
37. 37.64 × 62 =
38. 38.37 × 39 =
39. 39.505 × 501 =
40. 40.59 × 57 =

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