Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 639 · 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. 1.87 × 88 =
2. 2.73 × 72 =
3. 3.506 × 504 =
4. 4.402 × 402 =
5. 5.495 × 492 =
6. 6.26 × 27 =
7. 7.593 × 593 =
8. 8.31 × 34 =
9. 9.293 × 297 =
10. 10.595 × 597 =
11. 11.603 × 608 =
12. 12.302 × 305 =
13. 13.32 × 34 =
14. 14.306 × 301 =
15. 15.87 × 87 =
16. 16.61 × 64 =
17. 17.398 × 394 =
18. 18.33 × 34 =
19. 19.503 × 505 =
20. 20.28 × 28 =
21. 21.92 × 93 =
22. 22.37 × 37 =
23. 23.194 × 197 =
24. 24.19 × 19 =
25. 25.79 × 78 =
26. 26.604 × 609 =
27. 27.66 × 67 =
28. 28.32 × 31 =
29. 29.396 × 397 =
30. 30.62 × 62 =
31. 31.71 × 73 =
32. 32.192 × 192 =
33. 33.19 × 18 =
34. 34.199 × 191 =
35. 35.31 × 34 =
36. 36.498 × 497 =
37. 37.401 × 401 =
38. 38.19 × 17 =
39. 39.197 × 196 =
40. 40.306 × 304 =

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