Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 885 · 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. 2.22 × 21 =
3. 3.76 × 76 =
4. 4.66 × 66 =
5. 5.39 × 38 =
6. 6.19 × 17 =
7. 7.305 × 306 =
8. 8.592 × 592 =
9. 9.504 × 501 =
10. 10.399 × 395 =
11. 11.74 × 71 =
12. 12.86 × 89 =
13. 13.596 × 598 =
14. 14.395 × 395 =
15. 15.73 × 72 =
16. 16.397 × 392 =
17. 17.81 × 82 =
18. 18.71 × 72 =
19. 19.62 × 62 =
20. 20.62 × 61 =
21. 21.598 × 592 =
22. 22.398 × 394 =
23. 23.34 × 32 =
24. 24.16 × 18 =
25. 25.298 × 295 =
26. 26.64 × 63 =
27. 27.44 × 44 =
28. 28.32 × 33 =
29. 29.39 × 39 =
30. 30.391 × 396 =
31. 31.391 × 397 =
32. 32.82 × 83 =
33. 33.31 × 32 =
34. 34.93 × 93 =
35. 35.292 × 294 =
36. 36.68 × 67 =
37. 37.408 × 403 =
38. 38.67 × 69 =
39. 39.23 × 21 =
40. 40.18 × 17 =

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