Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 81 · 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. 1.82 × 81 =
2. 2.198 × 196 =
3. 3.593 × 594 =
4. 4.206 × 202 =
5. 5.303 × 303 =
6. 6.29 × 26 =
7. 7.202 × 209 =
8. 8.394 × 392 =
9. 9.505 × 502 =
10. 10.294 × 294 =
11. 11.19 × 19 =
12. 12.301 × 308 =
13. 13.298 × 296 =
14. 14.502 × 503 =
15. 15.508 × 503 =
16. 16.33 × 32 =
17. 17.59 × 56 =
18. 18.509 × 501 =
19. 19.16 × 16 =
20. 20.192 × 193 =
21. 21.603 × 601 =
22. 22.93 × 92 =
23. 23.402 × 402 =
24. 24.502 × 508 =
25. 25.48 × 48 =
26. 26.609 × 609 =
27. 27.39 × 38 =
28. 28.76 × 79 =
29. 29.94 × 94 =
30. 30.27 × 28 =
31. 31.192 × 192 =
32. 32.66 × 67 =
33. 33.302 × 303 =
34. 34.77 × 78 =
35. 35.21 × 21 =
36. 36.16 × 16 =
37. 37.68 × 69 =
38. 38.38 × 37 =
39. 39.204 × 203 =
40. 40.497 × 498 =

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