Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 397 · 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 × 8 =
2. 2.110 × 105 =
3. 3.114 × 108 =
4. 4.94 × 91 =
5. 5.98 × 99 =
6. 6.115 × 93 =
7. 7.97 × 95 =
8. 8.108 × 99 =
9. 9.106 × 114 =
10. 10.12 × 9 =
11. 11.96 × 89 =
12. 12.87 × 99 =
13. 13.1004 × 994 =
14. 14.13 × 14 =
15. 15.7 × 9 =
16. 16.107 × 96 =
17. 17.87 × 93 =
18. 18.94 × 92 =
19. 19.109 × 104 =
20. 20.101 × 91 =
21. 21.11 × 11 =
22. 22.101 × 113 =
23. 23.1020 × 1015 =
24. 24.103 × 94 =
25. 25.94 × 85 =
26. 26.11 × 11 =
27. 27.7 × 7 =
28. 28.13 × 14 =
29. 29.14 × 13 =
30. 30.1021 × 988 =
31. 31.1011 × 1014 =
32. 32.1016 × 985 =
33. 33.106 × 95 =
34. 34.1008 × 1019 =
35. 35.87 × 99 =
36. 36.102 × 112 =
37. 37.102 × 105 =
38. 38.13 × 7 =
39. 39.981 × 989 =
40. 40.99 × 95 =

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