Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 976 · 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. 1.82 × 81 =
2. 2.79 × 78 =
3. 3.42 × 43 =
4. 4.89 × 89 =
5. 5.21 × 21 =
6. 6.88 × 87 =
7. 7.41 × 41 =
8. 8.17 × 19 =
9. 9.391 × 394 =
10. 10.209 × 206 =
11. 11.209 × 202 =
12. 12.78 × 79 =
13. 13.404 × 405 =
14. 14.306 × 302 =
15. 15.393 × 394 =
16. 16.77 × 79 =
17. 17.37 × 38 =
18. 18.506 × 502 =
19. 19.77 × 79 =
20. 20.309 × 306 =
21. 21.392 × 397 =
22. 22.94 × 93 =
23. 23.23 × 21 =
24. 24.396 × 392 =
25. 25.56 × 59 =
26. 26.309 × 303 =
27. 27.41 × 41 =
28. 28.49 × 47 =
29. 29.299 × 296 =
30. 30.306 × 308 =
31. 31.199 × 195 =
32. 32.76 × 78 =
33. 33.76 × 78 =
34. 34.409 × 401 =
35. 35.494 × 492 =
36. 36.492 × 498 =
37. 37.77 × 79 =
38. 38.63 × 63 =
39. 39.397 × 398 =
40. 40.34 × 34 =

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