Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 684 · 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. 1.51 × 52 =
2. 2.203 × 209 =
3. 3.69 × 66 =
4. 4.302 × 305 =
5. 5.16 × 16 =
6. 6.94 × 92 =
7. 7.593 × 595 =
8. 8.77 × 79 =
9. 9.603 × 605 =
10. 10.74 × 71 =
11. 11.301 × 301 =
12. 12.72 × 74 =
13. 13.16 × 19 =
14. 14.57 × 58 =
15. 15.21 × 21 =
16. 16.79 × 78 =
17. 17.396 × 395 =
18. 18.31 × 32 =
19. 19.88 × 87 =
20. 20.392 × 398 =
21. 21.21 × 23 =
22. 22.208 × 204 =
23. 23.596 × 598 =
24. 24.292 × 298 =
25. 25.43 × 43 =
26. 26.207 × 206 =
27. 27.194 × 191 =
28. 28.509 × 509 =
29. 29.27 × 29 =
30. 30.506 × 501 =
31. 31.196 × 198 =
32. 32.42 × 44 =
33. 33.409 × 406 =
34. 34.293 × 297 =
35. 35.18 × 18 =
36. 36.604 × 608 =
37. 37.88 × 88 =
38. 38.39 × 37 =
39. 39.206 × 205 =
40. 40.72 × 71 =

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