Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 699 · 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. 1.207 × 209 =
2. 2.61 × 64 =
3. 3.307 × 308 =
4. 4.605 × 608 =
5. 5.89 × 86 =
6. 6.56 × 58 =
7. 7.68 × 67 =
8. 8.51 × 51 =
9. 9.199 × 193 =
10. 10.595 × 592 =
11. 11.32 × 31 =
12. 12.67 × 69 =
13. 13.24 × 23 =
14. 14.68 × 66 =
15. 15.203 × 207 =
16. 16.403 × 407 =
17. 17.34 × 34 =
18. 18.86 × 88 =
19. 19.294 × 291 =
20. 20.303 × 308 =
21. 21.303 × 303 =
22. 22.599 × 597 =
23. 23.47 × 49 =
24. 24.598 × 595 =
25. 25.307 × 305 =
26. 26.51 × 52 =
27. 27.62 × 63 =
28. 28.392 × 393 =
29. 29.27 × 27 =
30. 30.62 × 61 =
31. 31.294 × 299 =
32. 32.194 × 193 =
33. 33.306 × 308 =
34. 34.76 × 79 =
35. 35.31 × 33 =
36. 36.44 × 41 =
37. 37.309 × 303 =
38. 38.83 × 82 =
39. 39.37 × 37 =
40. 40.401 × 403 =

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