Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 489 · 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. 1.67 × 66 =
2. 2.34 × 33 =
3. 3.53 × 51 =
4. 4.39 × 36 =
5. 5.46 × 49 =
6. 6.203 × 207 =
7. 7.64 × 62 =
8. 8.292 × 291 =
9. 9.68 × 69 =
10. 10.409 × 408 =
11. 11.34 × 33 =
12. 12.43 × 41 =
13. 13.201 × 202 =
14. 14.34 × 33 =
15. 15.38 × 39 =
16. 16.93 × 91 =
17. 17.496 × 498 =
18. 18.605 × 607 =
19. 19.597 × 596 =
20. 20.61 × 64 =
21. 21.87 × 86 =
22. 22.56 × 56 =
23. 23.69 × 69 =
24. 24.202 × 208 =
25. 25.294 × 296 =
26. 26.297 × 292 =
27. 27.499 × 494 =
28. 28.53 × 54 =
29. 29.52 × 51 =
30. 30.68 × 67 =
31. 31.72 × 74 =
32. 32.409 × 402 =
33. 33.43 × 43 =
34. 34.69 × 69 =
35. 35.27 × 26 =
36. 36.303 × 301 =
37. 37.22 × 22 =
38. 38.23 × 23 =
39. 39.18 × 18 =
40. 40.94 × 93 =

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