Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 661 · 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. 1.73 × 71 =
2. 2.51 × 53 =
3. 3.299 × 295 =
4. 4.61 × 61 =
5. 5.86 × 89 =
6. 6.27 × 26 =
7. 7.23 × 24 =
8. 8.395 × 393 =
9. 9.397 × 392 =
10. 10.63 × 61 =
11. 11.506 × 506 =
12. 12.494 × 492 =
13. 13.194 × 197 =
14. 14.47 × 49 =
15. 15.392 × 393 =
16. 16.509 × 505 =
17. 17.208 × 209 =
18. 18.33 × 31 =
19. 19.49 × 46 =
20. 20.398 × 398 =
21. 21.62 × 61 =
22. 22.506 × 501 =
23. 23.22 × 21 =
24. 24.297 × 297 =
25. 25.303 × 305 =
26. 26.18 × 16 =
27. 27.195 × 199 =
28. 28.17 × 16 =
29. 29.74 × 71 =
30. 30.36 × 37 =
31. 31.501 × 501 =
32. 32.48 × 48 =
33. 33.301 × 303 =
34. 34.293 × 296 =
35. 35.508 × 506 =
36. 36.492 × 498 =
37. 37.26 × 29 =
38. 38.497 × 498 =
39. 39.51 × 52 =
40. 40.508 × 503 =

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