Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 181 · 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 × 408 =
2. 2.28 × 29 =
3. 3.197 × 191 =
4. 4.39 × 39 =
5. 5.52 × 54 =
6. 6.502 × 503 =
7. 7.401 × 409 =
8. 8.58 × 57 =
9. 9.609 × 609 =
10. 10.34 × 31 =
11. 11.38 × 36 =
12. 12.52 × 51 =
13. 13.594 × 595 =
14. 14.402 × 402 =
15. 15.59 × 57 =
16. 16.67 × 67 =
17. 17.22 × 24 =
18. 18.72 × 71 =
19. 19.53 × 51 =
20. 20.302 × 305 =
21. 21.52 × 53 =
22. 22.84 × 81 =
23. 23.309 × 301 =
24. 24.46 × 49 =
25. 25.31 × 32 =
26. 26.34 × 31 =
27. 27.492 × 492 =
28. 28.69 × 69 =
29. 29.21 × 21 =
30. 30.408 × 402 =
31. 31.86 × 89 =
32. 32.303 × 307 =
33. 33.204 × 202 =
34. 34.601 × 609 =
35. 35.29 × 28 =
36. 36.199 × 192 =
37. 37.397 × 394 =
38. 38.498 × 494 =
39. 39.53 × 52 =
40. 40.31 × 33 =

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