Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 642 · 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. 1.395 × 398 =
2. 2.57 × 56 =
3. 3.48 × 49 =
4. 4.191 × 198 =
5. 5.71 × 73 =
6. 6.72 × 71 =
7. 7.303 × 308 =
8. 8.86 × 86 =
9. 9.395 × 398 =
10. 10.67 × 66 =
11. 11.26 × 29 =
12. 12.194 × 199 =
13. 13.403 × 407 =
14. 14.26 × 29 =
15. 15.46 × 49 =
16. 16.22 × 23 =
17. 17.603 × 608 =
18. 18.199 × 196 =
19. 19.62 × 63 =
20. 20.44 × 43 =
21. 21.79 × 77 =
22. 22.46 × 49 =
23. 23.504 × 503 =
24. 24.593 × 592 =
25. 25.201 × 209 =
26. 26.69 × 69 =
27. 27.54 × 51 =
28. 28.67 × 69 =
29. 29.52 × 51 =
30. 30.37 × 37 =
31. 31.47 × 46 =
32. 32.47 × 47 =
33. 33.86 × 89 =
34. 34.72 × 71 =
35. 35.22 × 23 =
36. 36.299 × 291 =
37. 37.67 × 69 =
38. 38.598 × 597 =
39. 39.73 × 73 =
40. 40.24 × 23 =

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