Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 816 · 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. 1.109 × 114 =
2. 2.105 × 91 =
3. 3.1025 × 1038 =
4. 4.106 × 106 =
5. 5.89 × 86 =
6. 6.89 × 97 =
7. 7.107 × 101 =
8. 8.1001 × 990 =
9. 9.88 × 87 =
10. 10.1006 × 995 =
11. 11.91 × 92 =
12. 12.103 × 113 =
13. 13.99 × 99 =
14. 14.6 × 6 =
15. 15.105 × 112 =
16. 16.11 × 9 =
17. 17.110 × 105 =
18. 18.1005 × 1020 =
19. 19.14 × 8 =
20. 20.963 × 960 =
21. 21.95 × 91 =
22. 22.9 × 8 =
23. 23.11 × 14 =
24. 24.113 × 105 =
25. 25.92 × 97 =
26. 26.13 × 6 =
27. 27.986 × 977 =
28. 28.1028 × 962 =
29. 29.99 × 99 =
30. 30.12 × 12 =
31. 31.93 × 97 =
32. 32.1015 × 983 =
33. 33.87 × 88 =
34. 34.90 × 88 =
35. 35.14 × 12 =
36. 36.106 × 112 =
37. 37.8 × 6 =
38. 38.11 × 8 =
39. 39.111 × 92 =
40. 40.105 × 109 =

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