Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 189 · 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. 1.37 × 39 =
2. 2.493 × 498 =
3. 3.57 × 57 =
4. 4.84 × 82 =
5. 5.51 × 54 =
6. 6.21 × 24 =
7. 7.22 × 24 =
8. 8.198 × 195 =
9. 9.291 × 299 =
10. 10.58 × 56 =
11. 11.499 × 493 =
12. 12.29 × 28 =
13. 13.493 × 492 =
14. 14.28 × 26 =
15. 15.57 × 57 =
16. 16.307 × 302 =
17. 17.49 × 49 =
18. 18.293 × 299 =
19. 19.402 × 405 =
20. 20.207 × 206 =
21. 21.68 × 66 =
22. 22.84 × 84 =
23. 23.293 × 299 =
24. 24.208 × 202 =
25. 25.27 × 28 =
26. 26.63 × 63 =
27. 27.52 × 53 =
28. 28.38 × 37 =
29. 29.84 × 82 =
30. 30.192 × 193 =
31. 31.44 × 43 =
32. 32.493 × 492 =
33. 33.53 × 54 =
34. 34.32 × 31 =
35. 35.84 × 81 =
36. 36.305 × 301 =
37. 37.399 × 396 =
38. 38.22 × 21 =
39. 39.405 × 409 =
40. 40.32 × 32 =

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