Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 92 · 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. 1.81 × 84 =
2. 2.38 × 38 =
3. 3.17 × 17 =
4. 4.47 × 49 =
5. 5.605 × 608 =
6. 6.48 × 47 =
7. 7.34 × 34 =
8. 8.19 × 16 =
9. 9.298 × 292 =
10. 10.78 × 79 =
11. 11.67 × 68 =
12. 12.49 × 47 =
13. 13.302 × 304 =
14. 14.16 × 19 =
15. 15.94 × 93 =
16. 16.409 × 402 =
17. 17.76 × 78 =
18. 18.593 × 598 =
19. 19.57 × 59 =
20. 20.303 × 306 =
21. 21.44 × 44 =
22. 22.61 × 62 =
23. 23.595 × 598 =
24. 24.398 × 398 =
25. 25.202 × 205 =
26. 26.299 × 298 =
27. 27.29 × 27 =
28. 28.29 × 28 =
29. 29.398 × 398 =
30. 30.302 × 302 =
31. 31.93 × 93 =
32. 32.84 × 83 =
33. 33.66 × 67 =
34. 34.41 × 42 =
35. 35.54 × 51 =
36. 36.497 × 491 =
37. 37.19 × 19 =
38. 38.39 × 36 =
39. 39.603 × 601 =
40. 40.493 × 497 =

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