Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 693 · 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. 1.104 × 110 =
2. 2.992 × 975 =
3. 3.995 × 976 =
4. 4.112 × 96 =
5. 5.1010 × 960 =
6. 6.109 × 112 =
7. 7.13 × 13 =
8. 8.106 × 115 =
9. 9.1009 × 1032 =
10. 10.978 × 981 =
11. 11.103 × 105 =
12. 12.97 × 99 =
13. 13.109 × 91 =
14. 14.103 × 88 =
15. 15.1017 × 985 =
16. 16.1014 × 1004 =
17. 17.108 × 96 =
18. 18.6 × 9 =
19. 19.91 × 97 =
20. 20.9 × 8 =
21. 21.8 × 6 =
22. 22.1038 × 1038 =
23. 23.104 × 94 =
24. 24.115 × 106 =
25. 25.96 × 91 =
26. 26.1035 × 1022 =
27. 27.11 × 11 =
28. 28.106 × 105 =
29. 29.9 × 8 =
30. 30.8 × 9 =
31. 31.110 × 101 =
32. 32.12 × 11 =
33. 33.87 × 97 =
34. 34.975 × 987 =
35. 35.1009 × 1022 =
36. 36.93 × 91 =
37. 37.9 × 8 =
38. 38.86 × 88 =
39. 39.11 × 7 =
40. 40.1012 × 1005 =

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