Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 921 · 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. 1.43 × 43 =
2. 2.72 × 72 =
3. 3.509 × 508 =
4. 4.491 × 497 =
5. 5.496 × 493 =
6. 6.41 × 43 =
7. 7.36 × 38 =
8. 8.79 × 78 =
9. 9.29 × 29 =
10. 10.601 × 609 =
11. 11.28 × 26 =
12. 12.308 × 306 =
13. 13.86 × 87 =
14. 14.301 × 301 =
15. 15.41 × 44 =
16. 16.71 × 73 =
17. 17.392 × 392 =
18. 18.409 × 402 =
19. 19.191 × 199 =
20. 20.83 × 81 =
21. 21.83 × 81 =
22. 22.47 × 46 =
23. 23.77 × 78 =
24. 24.57 × 57 =
25. 25.305 × 308 =
26. 26.391 × 394 =
27. 27.74 × 73 =
28. 28.192 × 198 =
29. 29.63 × 63 =
30. 30.86 × 88 =
31. 31.43 × 42 =
32. 32.81 × 82 =
33. 33.197 × 194 =
34. 34.79 × 78 =
35. 35.51 × 54 =
36. 36.606 × 601 =
37. 37.398 × 395 =
38. 38.86 × 89 =
39. 39.198 × 194 =
40. 40.37 × 38 =

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