Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 922 · 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 × 72 =
2. 2.209 × 205 =
3. 3.78 × 77 =
4. 4.304 × 301 =
5. 5.76 × 79 =
6. 6.78 × 77 =
7. 7.37 × 39 =
8. 8.205 × 203 =
9. 9.299 × 294 =
10. 10.193 × 197 =
11. 11.596 × 599 =
12. 12.69 × 66 =
13. 13.59 × 56 =
14. 14.32 × 34 =
15. 15.404 × 406 =
16. 16.66 × 67 =
17. 17.191 × 193 =
18. 18.24 × 21 =
19. 19.601 × 601 =
20. 20.193 × 193 =
21. 21.69 × 67 =
22. 22.19 × 19 =
23. 23.301 × 302 =
24. 24.597 × 595 =
25. 25.199 × 193 =
26. 26.18 × 18 =
27. 27.296 × 296 =
28. 28.48 × 49 =
29. 29.494 × 494 =
30. 30.603 × 608 =
31. 31.301 × 305 =
32. 32.23 × 23 =
33. 33.498 × 492 =
34. 34.79 × 76 =
35. 35.49 × 49 =
36. 36.399 × 399 =
37. 37.394 × 398 =
38. 38.597 × 595 =
39. 39.39 × 37 =
40. 40.202 × 203 =

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