Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 667 · 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. 1.78 × 79 =
2. 2.71 × 71 =
3. 3.496 × 493 =
4. 4.609 × 609 =
5. 5.87 × 88 =
6. 6.39 × 39 =
7. 7.27 × 29 =
8. 8.86 × 89 =
9. 9.204 × 209 =
10. 10.392 × 396 =
11. 11.19 × 16 =
12. 12.304 × 307 =
13. 13.69 × 66 =
14. 14.37 × 38 =
15. 15.41 × 42 =
16. 16.37 × 37 =
17. 17.201 × 201 =
18. 18.494 × 498 =
19. 19.93 × 94 =
20. 20.506 × 509 =
21. 21.32 × 31 =
22. 22.199 × 197 =
23. 23.201 × 207 =
24. 24.601 × 603 =
25. 25.67 × 69 =
26. 26.86 × 88 =
27. 27.32 × 32 =
28. 28.293 × 296 =
29. 29.21 × 23 =
30. 30.43 × 43 =
31. 31.83 × 82 =
32. 32.92 × 93 =
33. 33.44 × 43 =
34. 34.398 × 398 =
35. 35.297 × 292 =
36. 36.74 × 73 =
37. 37.398 × 392 =
38. 38.305 × 308 =
39. 39.499 × 498 =
40. 40.38 × 39 =

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