Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 640 · 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. 1.198 × 199 =
2. 2.202 × 209 =
3. 3.49 × 47 =
4. 4.26 × 26 =
5. 5.501 × 507 =
6. 6.602 × 604 =
7. 7.46 × 49 =
8. 8.203 × 205 =
9. 9.67 × 66 =
10. 10.309 × 306 =
11. 11.192 × 196 =
12. 12.493 × 494 =
13. 13.92 × 92 =
14. 14.57 × 56 =
15. 15.606 × 604 =
16. 16.501 × 503 =
17. 17.391 × 399 =
18. 18.33 × 33 =
19. 19.209 × 204 =
20. 20.591 × 596 =
21. 21.37 × 38 =
22. 22.54 × 54 =
23. 23.93 × 91 =
24. 24.598 × 598 =
25. 25.195 × 191 =
26. 26.51 × 52 =
27. 27.298 × 299 =
28. 28.592 × 598 =
29. 29.207 × 202 =
30. 30.78 × 78 =
31. 31.202 × 209 =
32. 32.309 × 306 =
33. 33.509 × 503 =
34. 34.196 × 194 =
35. 35.291 × 298 =
36. 36.53 × 51 =
37. 37.39 × 36 =
38. 38.19 × 18 =
39. 39.27 × 26 =
40. 40.296 × 292 =

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