Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 18 · 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. 1.208 × 209 =
2. 2.33 × 33 =
3. 3.56 × 59 =
4. 4.87 × 89 =
5. 5.88 × 89 =
6. 6.84 × 83 =
7. 7.397 × 393 =
8. 8.47 × 48 =
9. 9.32 × 34 =
10. 10.83 × 81 =
11. 11.63 × 63 =
12. 12.504 × 509 =
13. 13.398 × 393 =
14. 14.194 × 198 =
15. 15.84 × 81 =
16. 16.26 × 27 =
17. 17.37 × 37 =
18. 18.24 × 21 =
19. 19.501 × 508 =
20. 20.19 × 17 =
21. 21.77 × 77 =
22. 22.29 × 26 =
23. 23.293 × 295 =
24. 24.397 × 398 =
25. 25.309 × 309 =
26. 26.401 × 408 =
27. 27.605 × 608 =
28. 28.197 × 199 =
29. 29.62 × 64 =
30. 30.84 × 81 =
31. 31.49 × 49 =
32. 32.62 × 63 =
33. 33.201 × 201 =
34. 34.89 × 86 =
35. 35.29 × 26 =
36. 36.198 × 195 =
37. 37.86 × 86 =
38. 38.29 × 28 =
39. 39.207 × 202 =
40. 40.23 × 21 =

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