Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 231 · 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. 1.87 × 87 =
2. 2.404 × 405 =
3. 3.194 × 194 =
4. 4.605 × 602 =
5. 5.48 × 47 =
6. 6.22 × 22 =
7. 7.298 × 296 =
8. 8.64 × 63 =
9. 9.51 × 53 =
10. 10.309 × 304 =
11. 11.191 × 195 =
12. 12.409 × 409 =
13. 13.21 × 24 =
14. 14.17 × 18 =
15. 15.22 × 22 =
16. 16.76 × 79 =
17. 17.199 × 196 =
18. 18.506 × 502 =
19. 19.208 × 208 =
20. 20.601 × 606 =
21. 21.507 × 508 =
22. 22.33 × 31 =
23. 23.28 × 27 =
24. 24.84 × 83 =
25. 25.309 × 306 =
26. 26.305 × 301 =
27. 27.403 × 401 =
28. 28.393 × 397 =
29. 29.86 × 87 =
30. 30.594 × 593 =
31. 31.306 × 301 =
32. 32.93 × 94 =
33. 33.59 × 57 =
34. 34.197 × 192 =
35. 35.37 × 39 =
36. 36.64 × 64 =
37. 37.68 × 66 =
38. 38.606 × 601 =
39. 39.16 × 16 =
40. 40.94 × 92 =

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