Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 135 · 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. 1.107 × 115 =
2. 2.986 × 999 =
3. 3.1039 × 1011 =
4. 4.6 × 9 =
5. 5.6 × 7 =
6. 6.105 × 89 =
7. 7.86 × 92 =
8. 8.1003 × 990 =
9. 9.14 × 11 =
10. 10.997 × 979 =
11. 11.960 × 979 =
12. 12.98 × 93 =
13. 13.113 × 109 =
14. 14.115 × 98 =
15. 15.91 × 96 =
16. 16.104 × 90 =
17. 17.97 × 90 =
18. 18.9 × 8 =
19. 19.6 × 7 =
20. 20.6 × 9 =
21. 21.99 × 99 =
22. 22.98 × 92 =
23. 23.1040 × 1031 =
24. 24.1009 × 1017 =
25. 25.113 × 99 =
26. 26.1017 × 989 =
27. 27.108 × 113 =
28. 28.111 × 113 =
29. 29.974 × 995 =
30. 30.972 × 960 =
31. 31.97 × 97 =
32. 32.1040 × 1003 =
33. 33.9 × 9 =
34. 34.90 × 98 =
35. 35.93 × 86 =
36. 36.86 × 86 =
37. 37.7 × 9 =
38. 38.113 × 101 =
39. 39.85 × 87 =
40. 40.1009 × 969 =

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