Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 409 · 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. 1.67 × 69 =
2. 2.602 × 601 =
3. 3.29 × 26 =
4. 4.501 × 502 =
5. 5.299 × 299 =
6. 6.191 × 194 =
7. 7.52 × 52 =
8. 8.94 × 94 =
9. 9.48 × 48 =
10. 10.72 × 74 =
11. 11.298 × 297 =
12. 12.19 × 19 =
13. 13.494 × 497 =
14. 14.36 × 39 =
15. 15.31 × 32 =
16. 16.406 × 401 =
17. 17.16 × 17 =
18. 18.37 × 39 =
19. 19.31 × 32 =
20. 20.191 × 199 =
21. 21.208 × 203 =
22. 22.33 × 34 =
23. 23.66 × 69 =
24. 24.82 × 84 =
25. 25.91 × 91 =
26. 26.18 × 19 =
27. 27.34 × 33 =
28. 28.207 × 204 =
29. 29.398 × 398 =
30. 30.91 × 94 =
31. 31.28 × 29 =
32. 32.57 × 56 =
33. 33.396 × 395 =
34. 34.58 × 57 =
35. 35.209 × 205 =
36. 36.93 × 94 =
37. 37.296 × 299 =
38. 38.78 × 79 =
39. 39.66 × 69 =
40. 40.199 × 199 =

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