Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 853 · 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. 1.407 × 409 =
2. 2.31 × 31 =
3. 3.42 × 43 =
4. 4.67 × 66 =
5. 5.398 × 395 =
6. 6.18 × 19 =
7. 7.203 × 208 =
8. 8.89 × 89 =
9. 9.603 × 603 =
10. 10.81 × 82 =
11. 11.16 × 19 =
12. 12.82 × 81 =
13. 13.292 × 294 =
14. 14.91 × 92 =
15. 15.92 × 93 =
16. 16.502 × 509 =
17. 17.48 × 47 =
18. 18.32 × 31 =
19. 19.19 × 17 =
20. 20.83 × 83 =
21. 21.59 × 59 =
22. 22.58 × 56 =
23. 23.396 × 393 =
24. 24.29 × 29 =
25. 25.198 × 197 =
26. 26.595 × 599 =
27. 27.27 × 28 =
28. 28.303 × 304 =
29. 29.399 × 394 =
30. 30.59 × 57 =
31. 31.81 × 81 =
32. 32.52 × 53 =
33. 33.31 × 34 =
34. 34.39 × 36 =
35. 35.206 × 205 =
36. 36.86 × 89 =
37. 37.209 × 209 =
38. 38.498 × 492 =
39. 39.69 × 67 =
40. 40.36 × 37 =

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