Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 892 · 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. 1.69 × 67 =
2. 2.26 × 28 =
3. 3.306 × 306 =
4. 4.47 × 47 =
5. 5.29 × 28 =
6. 6.17 × 17 =
7. 7.33 × 34 =
8. 8.301 × 301 =
9. 9.26 × 26 =
10. 10.309 × 304 =
11. 11.604 × 603 =
12. 12.509 × 505 =
13. 13.81 × 81 =
14. 14.69 × 69 =
15. 15.606 × 602 =
16. 16.37 × 36 =
17. 17.61 × 63 =
18. 18.22 × 21 =
19. 19.72 × 71 =
20. 20.608 × 602 =
21. 21.92 × 94 =
22. 22.34 × 33 =
23. 23.609 × 609 =
24. 24.68 × 67 =
25. 25.194 × 191 =
26. 26.404 × 402 =
27. 27.195 × 197 =
28. 28.492 × 497 =
29. 29.491 × 495 =
30. 30.64 × 61 =
31. 31.88 × 89 =
32. 32.81 × 84 =
33. 33.396 × 398 =
34. 34.504 × 504 =
35. 35.94 × 91 =
36. 36.296 × 297 =
37. 37.292 × 295 =
38. 38.89 × 88 =
39. 39.595 × 591 =
40. 40.405 × 406 =

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