Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 802 · 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. 1.42 × 42 =
2. 2.72 × 71 =
3. 3.23 × 21 =
4. 4.307 × 307 =
5. 5.81 × 81 =
6. 6.17 × 19 =
7. 7.591 × 591 =
8. 8.41 × 42 =
9. 9.19 × 19 =
10. 10.509 × 503 =
11. 11.66 × 67 =
12. 12.201 × 207 =
13. 13.56 × 58 =
14. 14.206 × 201 =
15. 15.397 × 396 =
16. 16.397 × 394 =
17. 17.401 × 409 =
18. 18.66 × 67 =
19. 19.39 × 38 =
20. 20.203 × 201 =
21. 21.17 × 18 =
22. 22.18 × 19 =
23. 23.31 × 31 =
24. 24.69 × 68 =
25. 25.296 × 299 =
26. 26.205 × 202 =
27. 27.28 × 29 =
28. 28.21 × 24 =
29. 29.304 × 308 =
30. 30.603 × 604 =
31. 31.53 × 51 =
32. 32.395 × 398 =
33. 33.82 × 82 =
34. 34.602 × 601 =
35. 35.53 × 51 =
36. 36.402 × 408 =
37. 37.18 × 17 =
38. 38.41 × 41 =
39. 39.48 × 49 =
40. 40.402 × 402 =

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