Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 770 · 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. 1.47 × 47 =
2. 2.21 × 21 =
3. 3.26 × 27 =
4. 4.305 × 303 =
5. 5.76 × 77 =
6. 6.42 × 42 =
7. 7.299 × 297 =
8. 8.19 × 17 =
9. 9.16 × 17 =
10. 10.205 × 209 =
11. 11.67 × 68 =
12. 12.51 × 54 =
13. 13.44 × 44 =
14. 14.36 × 38 =
15. 15.91 × 94 =
16. 16.17 × 17 =
17. 17.207 × 201 =
18. 18.74 × 73 =
19. 19.48 × 49 =
20. 20.93 × 93 =
21. 21.593 × 599 =
22. 22.408 × 405 =
23. 23.83 × 81 =
24. 24.291 × 293 =
25. 25.58 × 57 =
26. 26.38 × 37 =
27. 27.605 × 602 =
28. 28.26 × 28 =
29. 29.32 × 33 =
30. 30.609 × 604 =
31. 31.29 × 27 =
32. 32.58 × 59 =
33. 33.72 × 73 =
34. 34.609 × 602 =
35. 35.24 × 24 =
36. 36.28 × 28 =
37. 37.499 × 499 =
38. 38.79 × 79 =
39. 39.593 × 599 =
40. 40.49 × 49 =

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