Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 974 · 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. 1.23 × 21 =
2. 2.404 × 404 =
3. 3.53 × 51 =
4. 4.206 × 207 =
5. 5.405 × 404 =
6. 6.29 × 29 =
7. 7.405 × 402 =
8. 8.28 × 29 =
9. 9.78 × 76 =
10. 10.46 × 46 =
11. 11.498 × 493 =
12. 12.402 × 403 =
13. 13.58 × 58 =
14. 14.43 × 42 =
15. 15.79 × 79 =
16. 16.394 × 397 =
17. 17.36 × 38 =
18. 18.53 × 51 =
19. 19.597 × 592 =
20. 20.73 × 73 =
21. 21.57 × 58 =
22. 22.53 × 52 =
23. 23.405 × 402 =
24. 24.48 × 46 =
25. 25.309 × 302 =
26. 26.491 × 492 =
27. 27.62 × 61 =
28. 28.81 × 83 =
29. 29.24 × 23 =
30. 30.78 × 76 =
31. 31.507 × 506 =
32. 32.56 × 57 =
33. 33.207 × 203 =
34. 34.62 × 63 =
35. 35.494 × 491 =
36. 36.298 × 295 =
37. 37.58 × 58 =
38. 38.297 × 292 =
39. 39.409 × 407 =
40. 40.77 × 79 =

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