Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 310 · 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 × 81 =
2. 2.73 × 71 =
3. 3.494 × 495 =
4. 4.398 × 393 =
5. 5.42 × 42 =
6. 6.76 × 79 =
7. 7.29 × 28 =
8. 8.506 × 508 =
9. 9.28 × 27 =
10. 10.501 × 503 =
11. 11.39 × 37 =
12. 12.306 × 309 =
13. 13.601 × 606 =
14. 14.19 × 19 =
15. 15.28 × 26 =
16. 16.63 × 61 =
17. 17.502 × 502 =
18. 18.91 × 92 =
19. 19.39 × 39 =
20. 20.39 × 36 =
21. 21.64 × 63 =
22. 22.593 × 597 =
23. 23.56 × 57 =
24. 24.74 × 71 =
25. 25.409 × 403 =
26. 26.19 × 18 =
27. 27.202 × 209 =
28. 28.394 × 398 =
29. 29.299 × 291 =
30. 30.93 × 91 =
31. 31.38 × 39 =
32. 32.32 × 32 =
33. 33.499 × 491 =
34. 34.401 × 408 =
35. 35.31 × 34 =
36. 36.199 × 191 =
37. 37.31 × 34 =
38. 38.28 × 28 =
39. 39.39 × 36 =
40. 40.39 × 38 =

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