Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 107 · 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. 1.603 × 605 =
2. 2.504 × 502 =
3. 3.67 × 66 =
4. 4.72 × 74 =
5. 5.71 × 72 =
6. 6.74 × 71 =
7. 7.194 × 197 =
8. 8.501 × 501 =
9. 9.494 × 496 =
10. 10.43 × 41 =
11. 11.48 × 48 =
12. 12.299 × 296 =
13. 13.297 × 298 =
14. 14.509 × 504 =
15. 15.598 × 593 =
16. 16.195 × 196 =
17. 17.76 × 79 =
18. 18.47 × 49 =
19. 19.36 × 37 =
20. 20.18 × 16 =
21. 21.22 × 23 =
22. 22.44 × 42 =
23. 23.396 × 392 =
24. 24.92 × 93 =
25. 25.191 × 196 =
26. 26.41 × 44 =
27. 27.79 × 76 =
28. 28.598 × 599 =
29. 29.47 × 47 =
30. 30.19 × 18 =
31. 31.46 × 48 =
32. 32.27 × 29 =
33. 33.19 × 17 =
34. 34.26 × 28 =
35. 35.36 × 38 =
36. 36.19 × 16 =
37. 37.21 × 24 =
38. 38.33 × 34 =
39. 39.397 × 392 =
40. 40.399 × 394 =

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