Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 217 · 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. 1.398 × 397 =
2. 2.198 × 193 =
3. 3.81 × 83 =
4. 4.72 × 73 =
5. 5.27 × 27 =
6. 6.394 × 398 =
7. 7.196 × 194 =
8. 8.56 × 58 =
9. 9.37 × 39 =
10. 10.309 × 303 =
11. 11.309 × 302 =
12. 12.79 × 79 =
13. 13.54 × 52 =
14. 14.301 × 309 =
15. 15.196 × 194 =
16. 16.601 × 603 =
17. 17.67 × 66 =
18. 18.302 × 301 =
19. 19.203 × 208 =
20. 20.509 × 508 =
21. 21.297 × 295 =
22. 22.297 × 298 =
23. 23.194 × 199 =
24. 24.64 × 64 =
25. 25.66 × 69 =
26. 26.306 × 302 =
27. 27.196 × 195 =
28. 28.403 × 402 =
29. 29.26 × 29 =
30. 30.22 × 22 =
31. 31.295 × 293 =
32. 32.593 × 597 =
33. 33.88 × 86 =
34. 34.77 × 78 =
35. 35.209 × 208 =
36. 36.84 × 81 =
37. 37.602 × 606 =
38. 38.71 × 73 =
39. 39.299 × 293 =
40. 40.89 × 87 =

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