Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 451 · 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. 1.52 × 53 =
2. 2.88 × 87 =
3. 3.71 × 72 =
4. 4.392 × 394 =
5. 5.79 × 78 =
6. 6.62 × 61 =
7. 7.93 × 91 =
8. 8.297 × 296 =
9. 9.63 × 64 =
10. 10.591 × 599 =
11. 11.91 × 92 =
12. 12.291 × 296 =
13. 13.32 × 33 =
14. 14.309 × 302 =
15. 15.33 × 32 =
16. 16.22 × 21 =
17. 17.306 × 308 =
18. 18.393 × 397 =
19. 19.37 × 38 =
20. 20.79 × 78 =
21. 21.18 × 19 =
22. 22.81 × 81 =
23. 23.24 × 22 =
24. 24.39 × 38 =
25. 25.408 × 409 =
26. 26.294 × 298 =
27. 27.59 × 56 =
28. 28.84 × 84 =
29. 29.89 × 87 =
30. 30.605 × 606 =
31. 31.492 × 492 =
32. 32.78 × 77 =
33. 33.308 × 305 =
34. 34.86 × 89 =
35. 35.506 × 509 =
36. 36.199 × 193 =
37. 37.196 × 197 =
38. 38.495 × 496 =
39. 39.604 × 609 =
40. 40.46 × 47 =

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