Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 990 · 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. 1.66 × 67 =
2. 2.303 × 303 =
3. 3.44 × 44 =
4. 4.29 × 28 =
5. 5.66 × 66 =
6. 6.19 × 16 =
7. 7.62 × 61 =
8. 8.42 × 42 =
9. 9.192 × 195 =
10. 10.402 × 402 =
11. 11.66 × 69 =
12. 12.78 × 78 =
13. 13.63 × 64 =
14. 14.91 × 91 =
15. 15.39 × 39 =
16. 16.607 × 603 =
17. 17.43 × 43 =
18. 18.24 × 22 =
19. 19.201 × 203 =
20. 20.72 × 72 =
21. 21.602 × 603 =
22. 22.201 × 203 =
23. 23.503 × 508 =
24. 24.498 × 497 =
25. 25.499 × 499 =
26. 26.72 × 71 =
27. 27.81 × 82 =
28. 28.56 × 58 =
29. 29.399 × 398 =
30. 30.93 × 93 =
31. 31.22 × 23 =
32. 32.26 × 26 =
33. 33.505 × 506 =
34. 34.71 × 72 =
35. 35.295 × 298 =
36. 36.201 × 207 =
37. 37.81 × 82 =
38. 38.405 × 405 =
39. 39.18 × 17 =
40. 40.41 × 41 =

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