Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 914 · 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. 1.72 × 73 =
2. 2.31 × 33 =
3. 3.398 × 393 =
4. 4.31 × 31 =
5. 5.191 × 199 =
6. 6.202 × 208 =
7. 7.22 × 24 =
8. 8.202 × 202 =
9. 9.49 × 46 =
10. 10.23 × 21 =
11. 11.598 × 598 =
12. 12.87 × 88 =
13. 13.298 × 297 =
14. 14.591 × 597 =
15. 15.609 × 607 =
16. 16.43 × 42 =
17. 17.19 × 17 =
18. 18.81 × 81 =
19. 19.24 × 24 =
20. 20.193 × 196 =
21. 21.21 × 22 =
22. 22.37 × 37 =
23. 23.24 × 22 =
24. 24.604 × 601 =
25. 25.491 × 493 =
26. 26.204 × 203 =
27. 27.297 × 297 =
28. 28.22 × 22 =
29. 29.599 × 593 =
30. 30.394 × 396 =
31. 31.207 × 204 =
32. 32.21 × 21 =
33. 33.73 × 71 =
34. 34.397 × 394 =
35. 35.195 × 191 =
36. 36.306 × 309 =
37. 37.28 × 26 =
38. 38.33 × 34 =
39. 39.91 × 92 =
40. 40.297 × 296 =

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