Working Base Multiplication Worksheet

Vedic maths trick 15: Working-base multiplication · Set 688 · 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. 1.502 × 503 =
2. 2.48 × 47 =
3. 3.23 × 21 =
4. 4.198 × 199 =
5. 5.202 × 203 =
6. 6.87 × 89 =
7. 7.494 × 492 =
8. 8.23 × 23 =
9. 9.51 × 51 =
10. 10.501 × 501 =
11. 11.37 × 36 =
12. 12.48 × 48 =
13. 13.59 × 58 =
14. 14.395 × 399 =
15. 15.18 × 18 =
16. 16.48 × 46 =
17. 17.408 × 408 =
18. 18.296 × 291 =
19. 19.592 × 599 =
20. 20.605 × 608 =
21. 21.402 × 405 =
22. 22.44 × 42 =
23. 23.31 × 33 =
24. 24.17 × 17 =
25. 25.393 × 399 =
26. 26.399 × 393 =
27. 27.391 × 397 =
28. 28.32 × 31 =
29. 29.607 × 608 =
30. 30.299 × 297 =
31. 31.396 × 399 =
32. 32.598 × 594 =
33. 33.48 × 47 =
34. 34.302 × 308 =
35. 35.61 × 63 =
36. 36.403 × 407 =
37. 37.73 × 73 =
38. 38.87 × 89 =
39. 39.86 × 88 =
40. 40.28 × 28 =

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