Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 689 · 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. 1.14 × 13 =
2. 2.113 × 105 =
3. 3.1006 × 989 =
4. 4.1012 × 962 =
5. 5.12 × 9 =
6. 6.114 × 86 =
7. 7.93 × 86 =
8. 8.101 × 102 =
9. 9.12 × 9 =
10. 10.14 × 8 =
11. 11.105 × 107 =
12. 12.14 × 7 =
13. 13.101 × 115 =
14. 14.101 × 88 =
15. 15.6 × 9 =
16. 16.85 × 93 =
17. 17.102 × 115 =
18. 18.14 × 9 =
19. 19.14 × 11 =
20. 20.13 × 12 =
21. 21.6 × 9 =
22. 22.1004 × 1009 =
23. 23.12 × 13 =
24. 24.13 × 13 =
25. 25.1034 × 1011 =
26. 26.6 × 9 =
27. 27.97 × 97 =
28. 28.92 × 86 =
29. 29.1038 × 965 =
30. 30.92 × 85 =
31. 31.965 × 974 =
32. 32.13 × 8 =
33. 33.87 × 88 =
34. 34.110 × 87 =
35. 35.11 × 13 =
36. 36.97 × 91 =
37. 37.1031 × 985 =
38. 38.115 × 99 =
39. 39.92 × 93 =
40. 40.103 × 94 =

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