Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 571 · 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. 1.23 × 21 =
2. 2.82 × 82 =
3. 3.408 × 406 =
4. 4.192 × 198 =
5. 5.73 × 71 =
6. 6.33 × 32 =
7. 7.34 × 33 =
8. 8.499 × 491 =
9. 9.39 × 39 =
10. 10.18 × 17 =
11. 11.82 × 84 =
12. 12.395 × 397 =
13. 13.199 × 192 =
14. 14.204 × 202 =
15. 15.508 × 501 =
16. 16.29 × 26 =
17. 17.39 × 38 =
18. 18.79 × 78 =
19. 19.91 × 92 =
20. 20.46 × 47 =
21. 21.22 × 22 =
22. 22.208 × 202 =
23. 23.57 × 56 =
24. 24.62 × 61 =
25. 25.33 × 33 =
26. 26.397 × 395 =
27. 27.22 × 23 =
28. 28.88 × 89 =
29. 29.196 × 197 =
30. 30.31 × 34 =
31. 31.21 × 23 =
32. 32.19 × 18 =
33. 33.297 × 299 =
34. 34.502 × 505 =
35. 35.62 × 62 =
36. 36.16 × 18 =
37. 37.57 × 57 =
38. 38.303 × 301 =
39. 39.18 × 17 =
40. 40.51 × 54 =

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