Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 207 · 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. 1.72 × 74 =
2. 2.403 × 404 =
3. 3.398 × 399 =
4. 4.29 × 27 =
5. 5.298 × 291 =
6. 6.48 × 48 =
7. 7.195 × 198 =
8. 8.394 × 398 =
9. 9.39 × 39 =
10. 10.52 × 51 =
11. 11.391 × 398 =
12. 12.501 × 503 =
13. 13.193 × 199 =
14. 14.209 × 203 =
15. 15.49 × 47 =
16. 16.86 × 86 =
17. 17.47 × 46 =
18. 18.76 × 79 =
19. 19.56 × 56 =
20. 20.66 × 66 =
21. 21.34 × 33 =
22. 22.508 × 501 =
23. 23.46 × 49 =
24. 24.69 × 69 =
25. 25.194 × 198 =
26. 26.18 × 19 =
27. 27.297 × 292 =
28. 28.81 × 83 =
29. 29.49 × 49 =
30. 30.31 × 33 =
31. 31.199 × 199 =
32. 32.33 × 33 =
33. 33.47 × 47 =
34. 34.595 × 599 =
35. 35.89 × 87 =
36. 36.496 × 498 =
37. 37.44 × 44 =
38. 38.504 × 507 =
39. 39.56 × 59 =
40. 40.52 × 54 =

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