Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 747 · 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. 1.87 × 87 =
2. 2.491 × 495 =
3. 3.88 × 87 =
4. 4.24 × 23 =
5. 5.61 × 64 =
6. 6.74 × 72 =
7. 7.51 × 54 =
8. 8.597 × 597 =
9. 9.37 × 36 =
10. 10.89 × 87 =
11. 11.495 × 492 =
12. 12.591 × 599 =
13. 13.44 × 43 =
14. 14.81 × 84 =
15. 15.63 × 64 =
16. 16.593 × 592 =
17. 17.51 × 52 =
18. 18.34 × 34 =
19. 19.91 × 93 =
20. 20.506 × 503 =
21. 21.62 × 62 =
22. 22.596 × 592 =
23. 23.193 × 194 =
24. 24.56 × 56 =
25. 25.202 × 203 =
26. 26.33 × 32 =
27. 27.398 × 391 =
28. 28.89 × 88 =
29. 29.508 × 501 =
30. 30.37 × 38 =
31. 31.495 × 498 =
32. 32.72 × 74 =
33. 33.598 × 597 =
34. 34.407 × 409 =
35. 35.202 × 203 =
36. 36.64 × 62 =
37. 37.61 × 64 =
38. 38.91 × 91 =
39. 39.393 × 398 =
40. 40.395 × 394 =

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