Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 670 · 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. 1.53 × 51 =
2. 2.73 × 71 =
3. 3.17 × 18 =
4. 4.87 × 89 =
5. 5.198 × 197 =
6. 6.602 × 609 =
7. 7.16 × 18 =
8. 8.18 × 17 =
9. 9.61 × 62 =
10. 10.401 × 402 =
11. 11.492 × 495 =
12. 12.72 × 72 =
13. 13.33 × 33 =
14. 14.37 × 39 =
15. 15.23 × 23 =
16. 16.47 × 49 =
17. 17.295 × 299 =
18. 18.36 × 37 =
19. 19.18 × 18 =
20. 20.199 × 197 =
21. 21.68 × 69 =
22. 22.51 × 52 =
23. 23.41 × 42 =
24. 24.27 × 27 =
25. 25.607 × 602 =
26. 26.19 × 16 =
27. 27.83 × 82 =
28. 28.291 × 299 =
29. 29.198 × 195 =
30. 30.392 × 398 =
31. 31.41 × 41 =
32. 32.32 × 34 =
33. 33.206 × 203 =
34. 34.397 × 395 =
35. 35.21 × 21 =
36. 36.202 × 202 =
37. 37.502 × 501 =
38. 38.84 × 83 =
39. 39.62 × 61 =
40. 40.84 × 81 =

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