Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 643 · 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. 1.88 × 87 =
2. 2.39 × 37 =
3. 3.64 × 64 =
4. 4.87 × 89 =
5. 5.602 × 602 =
6. 6.592 × 596 =
7. 7.56 × 58 =
8. 8.21 × 22 =
9. 9.79 × 78 =
10. 10.398 × 391 =
11. 11.51 × 51 =
12. 12.391 × 394 =
13. 13.199 × 199 =
14. 14.39 × 38 =
15. 15.196 × 198 =
16. 16.72 × 73 =
17. 17.16 × 18 =
18. 18.29 × 26 =
19. 19.44 × 44 =
20. 20.302 × 302 =
21. 21.34 × 31 =
22. 22.507 × 501 =
23. 23.596 × 599 =
24. 24.302 × 303 =
25. 25.29 × 26 =
26. 26.59 × 59 =
27. 27.591 × 592 =
28. 28.406 × 409 =
29. 29.596 × 592 =
30. 30.56 × 56 =
31. 31.31 × 31 =
32. 32.69 × 69 =
33. 33.72 × 73 =
34. 34.24 × 24 =
35. 35.41 × 44 =
36. 36.396 × 392 =
37. 37.44 × 41 =
38. 38.502 × 505 =
39. 39.21 × 24 =
40. 40.28 × 28 =

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