Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 677 · 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. 1.91 × 92 =
2. 2.92 × 91 =
3. 3.499 × 497 =
4. 4.58 × 59 =
5. 5.599 × 599 =
6. 6.61 × 62 =
7. 7.57 × 58 =
8. 8.67 × 69 =
9. 9.196 × 198 =
10. 10.399 × 394 =
11. 11.62 × 63 =
12. 12.492 × 492 =
13. 13.293 × 291 =
14. 14.305 × 302 =
15. 15.398 × 392 =
16. 16.58 × 58 =
17. 17.393 × 392 =
18. 18.299 × 296 =
19. 19.609 × 607 =
20. 20.399 × 393 =
21. 21.609 × 602 =
22. 22.606 × 606 =
23. 23.37 × 38 =
24. 24.207 × 203 =
25. 25.91 × 92 =
26. 26.48 × 47 =
27. 27.67 × 66 =
28. 28.17 × 19 =
29. 29.32 × 31 =
30. 30.41 × 41 =
31. 31.396 × 394 =
32. 32.606 × 603 =
33. 33.78 × 79 =
34. 34.209 × 205 =
35. 35.23 × 21 =
36. 36.298 × 297 =
37. 37.44 × 44 =
38. 38.492 × 492 =
39. 39.59 × 59 =
40. 40.203 × 206 =

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