Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 621 · 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. 1.192 × 198 =
2. 2.34 × 34 =
3. 3.22 × 21 =
4. 4.57 × 56 =
5. 5.508 × 507 =
6. 6.29 × 29 =
7. 7.31 × 31 =
8. 8.28 × 29 =
9. 9.27 × 29 =
10. 10.397 × 399 =
11. 11.33 × 33 =
12. 12.505 × 506 =
13. 13.42 × 42 =
14. 14.302 × 306 =
15. 15.58 × 56 =
16. 16.87 × 88 =
17. 17.23 × 21 =
18. 18.84 × 82 =
19. 19.69 × 67 =
20. 20.509 × 502 =
21. 21.43 × 41 =
22. 22.207 × 203 =
23. 23.29 × 26 =
24. 24.74 × 74 =
25. 25.89 × 86 =
26. 26.39 × 37 =
27. 27.398 × 397 =
28. 28.294 × 291 =
29. 29.49 × 47 =
30. 30.294 × 299 =
31. 31.81 × 81 =
32. 32.38 × 36 =
33. 33.207 × 203 =
34. 34.203 × 205 =
35. 35.31 × 34 =
36. 36.43 × 43 =
37. 37.29 × 27 =
38. 38.66 × 68 =
39. 39.496 × 497 =
40. 40.396 × 399 =

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