Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 866 · 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. 1.11 × 11 =
2. 2.983 × 998 =
3. 3.992 × 983 =
4. 4.102 × 98 =
5. 5.960 × 996 =
6. 6.85 × 85 =
7. 7.13 × 7 =
8. 8.11 × 13 =
9. 9.1009 × 1007 =
10. 10.86 × 91 =
11. 11.11 × 14 =
12. 12.1009 × 987 =
13. 13.95 × 91 =
14. 14.11 × 6 =
15. 15.85 × 97 =
16. 16.95 × 97 =
17. 17.114 × 90 =
18. 18.92 × 96 =
19. 19.13 × 11 =
20. 20.110 × 98 =
21. 21.115 × 113 =
22. 22.90 × 97 =
23. 23.85 × 86 =
24. 24.1019 × 1024 =
25. 25.9 × 7 =
26. 26.9 × 6 =
27. 27.103 × 105 =
28. 28.92 × 92 =
29. 29.86 × 85 =
30. 30.102 × 113 =
31. 31.1040 × 1013 =
32. 32.101 × 104 =
33. 33.6 × 7 =
34. 34.95 × 92 =
35. 35.111 × 98 =
36. 36.11 × 8 =
37. 37.95 × 98 =
38. 38.1018 × 990 =
39. 39.967 × 971 =
40. 40.1001 × 1007 =

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