Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 912 · 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. 1.9 × 9 =
2. 2.1004 × 1021 =
3. 3.964 × 963 =
4. 4.14 × 9 =
5. 5.102 × 89 =
6. 6.99 × 94 =
7. 7.85 × 98 =
8. 8.112 × 85 =
9. 9.1038 × 989 =
10. 10.11 × 14 =
11. 11.14 × 14 =
12. 12.87 × 86 =
13. 13.88 × 87 =
14. 14.1025 × 1033 =
15. 15.101 × 114 =
16. 16.108 × 114 =
17. 17.102 × 97 =
18. 18.91 × 98 =
19. 19.114 × 103 =
20. 20.14 × 7 =
21. 21.1009 × 1039 =
22. 22.90 × 93 =
23. 23.111 × 106 =
24. 24.106 × 96 =
25. 25.101 × 112 =
26. 26.9 × 9 =
27. 27.95 × 94 =
28. 28.12 × 12 =
29. 29.13 × 9 =
30. 30.14 × 12 =
31. 31.96 × 88 =
32. 32.11 × 13 =
33. 33.99 × 91 =
34. 34.89 × 99 =
35. 35.1012 × 1029 =
36. 36.9 × 9 =
37. 37.12 × 13 =
38. 38.964 × 990 =
39. 39.1036 × 984 =
40. 40.1024 × 965 =

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