Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 512 · 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 × 73 =
2. 2.29 × 26 =
3. 3.93 × 91 =
4. 4.23 × 21 =
5. 5.295 × 298 =
6. 6.293 × 299 =
7. 7.394 × 393 =
8. 8.16 × 18 =
9. 9.49 × 49 =
10. 10.404 × 403 =
11. 11.597 × 597 =
12. 12.207 × 202 =
13. 13.505 × 506 =
14. 14.391 × 399 =
15. 15.62 × 64 =
16. 16.84 × 84 =
17. 17.29 × 29 =
18. 18.296 × 297 =
19. 19.19 × 19 =
20. 20.299 × 291 =
21. 21.304 × 306 =
22. 22.408 × 409 =
23. 23.207 × 201 =
24. 24.54 × 52 =
25. 25.601 × 603 =
26. 26.61 × 63 =
27. 27.61 × 61 =
28. 28.43 × 43 =
29. 29.191 × 197 =
30. 30.294 × 297 =
31. 31.72 × 74 =
32. 32.19 × 17 =
33. 33.28 × 28 =
34. 34.82 × 84 =
35. 35.62 × 61 =
36. 36.62 × 64 =
37. 37.594 × 594 =
38. 38.23 × 24 =
39. 39.302 × 303 =
40. 40.38 × 38 =

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