Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 45 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.1025 × 988 =
2. 2.115 × 105 =
3. 3.87 × 85 =
4. 4.1012 × 1033 =
5. 5.990 × 994 =
6. 6.89 × 86 =
7. 7.91 × 87 =
8. 8.102 × 95 =
9. 9.95 × 99 =
10. 10.110 × 85 =
11. 11.1013 × 1014 =
12. 12.99 × 96 =
13. 13.110 × 108 =
14. 14.974 × 995 =
15. 15.982 × 974 =
16. 16.103 × 105 =
17. 17.99 × 91 =
18. 18.91 × 99 =
19. 19.1003 × 1032 =
20. 20.13 × 8 =
21. 21.7 × 7 =
22. 22.105 × 115 =
23. 23.986 × 965 =
24. 24.107 × 86 =
25. 25.999 × 976 =
26. 26.92 × 91 =
27. 27.91 × 87 =
28. 28.1034 × 960 =
29. 29.960 × 973 =
30. 30.13 × 11 =
31. 31.13 × 11 =
32. 32.995 × 977 =
33. 33.115 × 102 =
34. 34.110 × 111 =
35. 35.1029 × 969 =
36. 36.108 × 102 =
37. 37.97 × 89 =
38. 38.8 × 7 =
39. 39.14 × 12 =
40. 40.87 × 96 =

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