Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 614 · 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. 1.78 × 79 =
2. 2.63 × 62 =
3. 3.71 × 72 =
4. 4.76 × 76 =
5. 5.407 × 407 =
6. 6.23 × 24 =
7. 7.89 × 89 =
8. 8.291 × 294 =
9. 9.58 × 56 =
10. 10.497 × 495 =
11. 11.304 × 305 =
12. 12.597 × 599 =
13. 13.398 × 393 =
14. 14.47 × 48 =
15. 15.66 × 68 =
16. 16.31 × 34 =
17. 17.402 × 409 =
18. 18.499 × 499 =
19. 19.293 × 296 =
20. 20.51 × 52 =
21. 21.602 × 607 =
22. 22.34 × 34 =
23. 23.502 × 506 =
24. 24.77 × 78 =
25. 25.395 × 396 =
26. 26.19 × 18 =
27. 27.84 × 84 =
28. 28.192 × 191 =
29. 29.38 × 39 =
30. 30.199 × 198 =
31. 31.26 × 29 =
32. 32.91 × 94 =
33. 33.38 × 36 =
34. 34.292 × 294 =
35. 35.38 × 37 =
36. 36.24 × 21 =
37. 37.497 × 497 =
38. 38.495 × 498 =
39. 39.32 × 32 =
40. 40.404 × 401 =

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