Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 890 · 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. 1.32 × 31 =
2. 2.72 × 71 =
3. 3.39 × 37 =
4. 4.69 × 69 =
5. 5.69 × 67 =
6. 6.88 × 87 =
7. 7.596 × 595 =
8. 8.204 × 202 =
9. 9.21 × 21 =
10. 10.399 × 392 =
11. 11.299 × 296 =
12. 12.62 × 64 =
13. 13.495 × 493 =
14. 14.29 × 28 =
15. 15.23 × 24 =
16. 16.22 × 23 =
17. 17.74 × 72 =
18. 18.598 × 591 =
19. 19.79 × 78 =
20. 20.28 × 26 =
21. 21.503 × 501 =
22. 22.504 × 509 =
23. 23.401 × 407 =
24. 24.53 × 51 =
25. 25.73 × 74 =
26. 26.41 × 41 =
27. 27.42 × 42 =
28. 28.49 × 49 =
29. 29.19 × 19 =
30. 30.31 × 31 =
31. 31.33 × 31 =
32. 32.405 × 406 =
33. 33.74 × 73 =
34. 34.306 × 309 =
35. 35.24 × 21 =
36. 36.31 × 32 =
37. 37.305 × 301 =
38. 38.51 × 54 =
39. 39.197 × 195 =
40. 40.191 × 197 =

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