Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 373 · 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. 1.405 × 408 =
2. 2.37 × 37 =
3. 3.77 × 78 =
4. 4.81 × 84 =
5. 5.88 × 89 =
6. 6.307 × 302 =
7. 7.192 × 191 =
8. 8.299 × 292 =
9. 9.16 × 18 =
10. 10.54 × 52 =
11. 11.497 × 491 =
12. 12.36 × 39 =
13. 13.494 × 495 =
14. 14.29 × 27 =
15. 15.74 × 74 =
16. 16.191 × 199 =
17. 17.295 × 299 =
18. 18.82 × 82 =
19. 19.607 × 606 =
20. 20.606 × 602 =
21. 21.76 × 79 =
22. 22.91 × 93 =
23. 23.18 × 16 =
24. 24.54 × 52 =
25. 25.403 × 408 =
26. 26.393 × 393 =
27. 27.204 × 207 =
28. 28.79 × 79 =
29. 29.21 × 22 =
30. 30.61 × 61 =
31. 31.399 × 392 =
32. 32.63 × 61 =
33. 33.491 × 497 =
34. 34.17 × 18 =
35. 35.599 × 593 =
36. 36.62 × 63 =
37. 37.48 × 47 =
38. 38.34 × 34 =
39. 39.38 × 39 =
40. 40.36 × 37 =

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