Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 316 · 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. 1.79 × 79 =
2. 2.505 × 503 =
3. 3.41 × 41 =
4. 4.506 × 505 =
5. 5.22 × 21 =
6. 6.596 × 599 =
7. 7.51 × 53 =
8. 8.497 × 497 =
9. 9.402 × 408 =
10. 10.302 × 301 =
11. 11.92 × 92 =
12. 12.16 × 17 =
13. 13.305 × 306 =
14. 14.42 × 41 =
15. 15.83 × 83 =
16. 16.403 × 402 =
17. 17.29 × 28 =
18. 18.297 × 293 =
19. 19.502 × 502 =
20. 20.403 × 406 =
21. 21.591 × 597 =
22. 22.32 × 33 =
23. 23.599 × 596 =
24. 24.16 × 17 =
25. 25.74 × 71 =
26. 26.16 × 19 =
27. 27.21 × 23 =
28. 28.296 × 294 =
29. 29.595 × 599 =
30. 30.88 × 86 =
31. 31.71 × 74 =
32. 32.92 × 93 =
33. 33.199 × 196 =
34. 34.403 × 409 =
35. 35.28 × 29 =
36. 36.402 × 403 =
37. 37.39 × 36 =
38. 38.37 × 36 =
39. 39.595 × 596 =
40. 40.207 × 202 =

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