Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 491 · 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. 1.87 × 98 =
2. 2.966 × 988 =
3. 3.94 × 95 =
4. 4.969 × 974 =
5. 5.90 × 98 =
6. 6.1004 × 1007 =
7. 7.92 × 89 =
8. 8.7 × 9 =
9. 9.1006 × 977 =
10. 10.986 × 995 =
11. 11.105 × 98 =
12. 12.1012 × 1014 =
13. 13.13 × 6 =
14. 14.11 × 11 =
15. 15.975 × 983 =
16. 16.113 × 115 =
17. 17.11 × 12 =
18. 18.107 × 96 =
19. 19.110 × 108 =
20. 20.1004 × 984 =
21. 21.1005 × 1021 =
22. 22.14 × 6 =
23. 23.102 × 103 =
24. 24.961 × 989 =
25. 25.97 × 85 =
26. 26.8 × 6 =
27. 27.14 × 8 =
28. 28.101 × 99 =
29. 29.6 × 8 =
30. 30.85 × 98 =
31. 31.105 × 107 =
32. 32.110 × 103 =
33. 33.115 × 89 =
34. 34.13 × 9 =
35. 35.109 × 85 =
36. 36.14 × 11 =
37. 37.90 × 90 =
38. 38.101 × 111 =
39. 39.94 × 98 =
40. 40.114 × 103 =

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