Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 498 · 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. 1.68 × 69 =
2. 2.38 × 36 =
3. 3.71 × 74 =
4. 4.206 × 202 =
5. 5.78 × 79 =
6. 6.191 × 191 =
7. 7.91 × 91 =
8. 8.506 × 504 =
9. 9.24 × 23 =
10. 10.601 × 603 =
11. 11.598 × 595 =
12. 12.391 × 399 =
13. 13.19 × 19 =
14. 14.66 × 69 =
15. 15.199 × 193 =
16. 16.33 × 32 =
17. 17.92 × 91 =
18. 18.393 × 395 =
19. 19.24 × 24 =
20. 20.71 × 71 =
21. 21.196 × 198 =
22. 22.78 × 77 =
23. 23.74 × 73 =
24. 24.46 × 46 =
25. 25.86 × 89 =
26. 26.44 × 41 =
27. 27.193 × 197 =
28. 28.509 × 502 =
29. 29.83 × 81 =
30. 30.392 × 398 =
31. 31.39 × 38 =
32. 32.598 × 593 =
33. 33.296 × 297 =
34. 34.71 × 74 =
35. 35.77 × 78 =
36. 36.498 × 492 =
37. 37.594 × 594 =
38. 38.499 × 492 =
39. 39.18 × 19 =
40. 40.39 × 37 =

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