Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 978 · 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. 1.64 × 62 =
2. 2.508 × 506 =
3. 3.501 × 503 =
4. 4.501 × 508 =
5. 5.79 × 77 =
6. 6.18 × 18 =
7. 7.36 × 38 =
8. 8.609 × 606 =
9. 9.605 × 607 =
10. 10.303 × 309 =
11. 11.494 × 493 =
12. 12.53 × 52 =
13. 13.197 × 197 =
14. 14.92 × 92 =
15. 15.24 × 23 =
16. 16.26 × 29 =
17. 17.34 × 31 =
18. 18.407 × 408 =
19. 19.21 × 21 =
20. 20.23 × 22 =
21. 21.21 × 22 =
22. 22.391 × 399 =
23. 23.492 × 496 =
24. 24.78 × 78 =
25. 25.206 × 203 =
26. 26.406 × 405 =
27. 27.39 × 38 =
28. 28.296 × 299 =
29. 29.204 × 207 =
30. 30.504 × 509 =
31. 31.59 × 57 =
32. 32.492 × 498 =
33. 33.196 × 198 =
34. 34.43 × 44 =
35. 35.33 × 33 =
36. 36.394 × 395 =
37. 37.87 × 87 =
38. 38.301 × 306 =
39. 39.305 × 303 =
40. 40.308 × 308 =

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