Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 604 · 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. 1.604 × 607 =
2. 2.77 × 76 =
3. 3.607 × 607 =
4. 4.73 × 74 =
5. 5.509 × 502 =
6. 6.26 × 26 =
7. 7.17 × 19 =
8. 8.73 × 73 =
9. 9.91 × 93 =
10. 10.502 × 507 =
11. 11.303 × 302 =
12. 12.54 × 51 =
13. 13.63 × 64 =
14. 14.63 × 62 =
15. 15.59 × 59 =
16. 16.61 × 61 =
17. 17.21 × 21 =
18. 18.66 × 68 =
19. 19.496 × 492 =
20. 20.62 × 62 =
21. 21.66 × 69 =
22. 22.198 × 195 =
23. 23.403 × 403 =
24. 24.207 × 203 =
25. 25.68 × 69 =
26. 26.72 × 72 =
27. 27.202 × 205 =
28. 28.52 × 54 =
29. 29.597 × 594 =
30. 30.496 × 495 =
31. 31.202 × 202 =
32. 32.292 × 299 =
33. 33.27 × 27 =
34. 34.596 × 591 =
35. 35.78 × 79 =
36. 36.292 × 298 =
37. 37.21 × 24 =
38. 38.409 × 403 =
39. 39.506 × 505 =
40. 40.408 × 405 =

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