Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 629 · 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. 1.602 × 607 =
2. 2.18 × 19 =
3. 3.398 × 397 =
4. 4.21 × 21 =
5. 5.83 × 83 =
6. 6.86 × 87 =
7. 7.82 × 84 =
8. 8.202 × 203 =
9. 9.36 × 38 =
10. 10.41 × 42 =
11. 11.609 × 603 =
12. 12.194 × 192 =
13. 13.397 × 394 =
14. 14.34 × 33 =
15. 15.197 × 198 =
16. 16.597 × 596 =
17. 17.291 × 297 =
18. 18.404 × 408 =
19. 19.27 × 29 =
20. 20.206 × 204 =
21. 21.59 × 59 =
22. 22.69 × 66 =
23. 23.36 × 39 =
24. 24.591 × 591 =
25. 25.196 × 197 =
26. 26.58 × 59 =
27. 27.297 × 296 =
28. 28.84 × 83 =
29. 29.22 × 24 =
30. 30.603 × 605 =
31. 31.405 × 407 =
32. 32.397 × 398 =
33. 33.49 × 49 =
34. 34.48 × 46 =
35. 35.394 × 396 =
36. 36.61 × 64 =
37. 37.66 × 66 =
38. 38.68 × 68 =
39. 39.206 × 202 =
40. 40.78 × 77 =

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