Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 249 · 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. 1.987 × 987 =
2. 2.114 × 97 =
3. 3.1027 × 961 =
4. 4.7 × 8 =
5. 5.1017 × 1011 =
6. 6.6 × 8 =
7. 7.14 × 7 =
8. 8.12 × 14 =
9. 9.85 × 90 =
10. 10.981 × 976 =
11. 11.98 × 89 =
12. 12.12 × 9 =
13. 13.14 × 11 =
14. 14.1003 × 1028 =
15. 15.97 × 98 =
16. 16.9 × 7 =
17. 17.114 × 91 =
18. 18.109 × 110 =
19. 19.990 × 989 =
20. 20.104 × 94 =
21. 21.101 × 110 =
22. 22.7 × 8 =
23. 23.13 × 8 =
24. 24.112 × 85 =
25. 25.1012 × 986 =
26. 26.1029 × 992 =
27. 27.114 × 91 =
28. 28.1014 × 991 =
29. 29.1016 × 998 =
30. 30.91 × 98 =
31. 31.101 × 104 =
32. 32.14 × 13 =
33. 33.108 × 96 =
34. 34.988 × 968 =
35. 35.91 × 97 =
36. 36.103 × 109 =
37. 37.96 × 91 =
38. 38.95 × 95 =
39. 39.102 × 95 =
40. 40.12 × 9 =

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