Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 245 · 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. 1.71 × 72 =
2. 2.88 × 86 =
3. 3.605 × 602 =
4. 4.506 × 504 =
5. 5.506 × 508 =
6. 6.495 × 499 =
7. 7.28 × 26 =
8. 8.81 × 82 =
9. 9.594 × 597 =
10. 10.298 × 291 =
11. 11.88 × 89 =
12. 12.41 × 43 =
13. 13.17 × 18 =
14. 14.24 × 24 =
15. 15.306 × 308 =
16. 16.502 × 505 =
17. 17.63 × 62 =
18. 18.21 × 24 =
19. 19.495 × 494 =
20. 20.59 × 57 =
21. 21.598 × 599 =
22. 22.87 × 88 =
23. 23.94 × 91 =
24. 24.208 × 209 =
25. 25.61 × 63 =
26. 26.601 × 606 =
27. 27.73 × 74 =
28. 28.301 × 309 =
29. 29.195 × 199 =
30. 30.499 × 493 =
31. 31.92 × 92 =
32. 32.43 × 41 =
33. 33.53 × 54 =
34. 34.402 × 408 =
35. 35.77 × 77 =
36. 36.24 × 22 =
37. 37.67 × 66 =
38. 38.78 × 77 =
39. 39.405 × 407 =
40. 40.49 × 46 =

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