Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 985 · 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. 1.17 × 17 =
2. 2.207 × 209 =
3. 3.299 × 296 =
4. 4.71 × 72 =
5. 5.593 × 593 =
6. 6.603 × 602 =
7. 7.32 × 31 =
8. 8.304 × 302 =
9. 9.41 × 44 =
10. 10.54 × 53 =
11. 11.19 × 19 =
12. 12.499 × 498 =
13. 13.79 × 77 =
14. 14.66 × 68 =
15. 15.209 × 209 =
16. 16.82 × 82 =
17. 17.67 × 67 =
18. 18.57 × 57 =
19. 19.301 × 307 =
20. 20.209 × 202 =
21. 21.18 × 19 =
22. 22.307 × 305 =
23. 23.72 × 71 =
24. 24.68 × 67 =
25. 25.398 × 398 =
26. 26.201 × 207 =
27. 27.21 × 24 =
28. 28.405 × 409 =
29. 29.16 × 18 =
30. 30.81 × 81 =
31. 31.72 × 74 =
32. 32.399 × 398 =
33. 33.78 × 79 =
34. 34.57 × 59 =
35. 35.64 × 63 =
36. 36.609 × 602 =
37. 37.18 × 18 =
38. 38.78 × 79 =
39. 39.205 × 205 =
40. 40.48 × 46 =

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