Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 425 · 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. 1.71 × 72 =
2. 2.74 × 72 =
3. 3.53 × 52 =
4. 4.49 × 49 =
5. 5.304 × 307 =
6. 6.78 × 79 =
7. 7.307 × 306 =
8. 8.291 × 293 =
9. 9.306 × 305 =
10. 10.209 × 209 =
11. 11.593 × 598 =
12. 12.602 × 605 =
13. 13.204 × 201 =
14. 14.57 × 59 =
15. 15.27 × 26 =
16. 16.609 × 601 =
17. 17.303 × 302 =
18. 18.497 × 496 =
19. 19.592 × 594 =
20. 20.199 × 198 =
21. 21.78 × 78 =
22. 22.18 × 19 =
23. 23.501 × 508 =
24. 24.27 × 29 =
25. 25.79 × 77 =
26. 26.81 × 82 =
27. 27.68 × 68 =
28. 28.57 × 59 =
29. 29.398 × 397 =
30. 30.27 × 28 =
31. 31.204 × 206 =
32. 32.306 × 305 =
33. 33.198 × 198 =
34. 34.206 × 202 =
35. 35.22 × 24 =
36. 36.76 × 79 =
37. 37.37 × 39 =
38. 38.293 × 294 =
39. 39.39 × 37 =
40. 40.28 × 28 =

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