Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 413 · 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. 1.74 × 73 =
2. 2.39 × 37 =
3. 3.93 × 94 =
4. 4.298 × 291 =
5. 5.29 × 28 =
6. 6.202 × 208 =
7. 7.499 × 491 =
8. 8.21 × 21 =
9. 9.36 × 38 =
10. 10.66 × 69 =
11. 11.54 × 54 =
12. 12.499 × 498 =
13. 13.399 × 392 =
14. 14.87 × 88 =
15. 15.603 × 606 =
16. 16.499 × 499 =
17. 17.593 × 599 =
18. 18.393 × 391 =
19. 19.79 × 77 =
20. 20.81 × 84 =
21. 21.396 × 393 =
22. 22.94 × 91 =
23. 23.72 × 74 =
24. 24.302 × 304 =
25. 25.28 × 26 =
26. 26.209 × 205 =
27. 27.504 × 508 =
28. 28.26 × 27 =
29. 29.41 × 41 =
30. 30.32 × 34 =
31. 31.23 × 22 =
32. 32.76 × 76 =
33. 33.31 × 32 =
34. 34.305 × 301 =
35. 35.87 × 88 =
36. 36.398 × 395 =
37. 37.502 × 502 =
38. 38.44 × 43 =
39. 39.208 × 202 =
40. 40.403 × 402 =

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