Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 421 · 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. 1.36 × 37 =
2. 2.43 × 44 =
3. 3.309 × 308 =
4. 4.208 × 209 =
5. 5.506 × 505 =
6. 6.397 × 394 =
7. 7.299 × 297 =
8. 8.208 × 209 =
9. 9.77 × 79 =
10. 10.399 × 398 =
11. 11.41 × 42 =
12. 12.503 × 506 =
13. 13.61 × 61 =
14. 14.19 × 19 =
15. 15.394 × 395 =
16. 16.306 × 308 =
17. 17.309 × 305 =
18. 18.606 × 608 =
19. 19.27 × 26 =
20. 20.394 × 395 =
21. 21.66 × 69 =
22. 22.21 × 22 =
23. 23.61 × 64 =
24. 24.497 × 491 =
25. 25.73 × 71 =
26. 26.92 × 92 =
27. 27.601 × 608 =
28. 28.404 × 409 =
29. 29.49 × 48 =
30. 30.208 × 205 =
31. 31.38 × 36 =
32. 32.202 × 203 =
33. 33.48 × 48 =
34. 34.71 × 74 =
35. 35.73 × 73 =
36. 36.37 × 38 =
37. 37.593 × 593 =
38. 38.42 × 43 =
39. 39.28 × 26 =
40. 40.398 × 392 =

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