Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 310 · 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. 1.110 × 108 =
2. 2.102 × 98 =
3. 3.92 × 96 =
4. 4.105 × 115 =
5. 5.104 × 87 =
6. 6.12 × 7 =
7. 7.111 × 86 =
8. 8.108 × 101 =
9. 9.961 × 997 =
10. 10.87 × 89 =
11. 11.105 × 103 =
12. 12.995 × 986 =
13. 13.111 × 112 =
14. 14.8 × 8 =
15. 15.95 × 89 =
16. 16.6 × 8 =
17. 17.8 × 9 =
18. 18.90 × 90 =
19. 19.106 × 86 =
20. 20.105 × 96 =
21. 21.113 × 112 =
22. 22.95 × 88 =
23. 23.106 × 103 =
24. 24.108 × 92 =
25. 25.109 × 97 =
26. 26.86 × 89 =
27. 27.1012 × 1037 =
28. 28.966 × 976 =
29. 29.92 × 87 =
30. 30.12 × 7 =
31. 31.995 × 983 =
32. 32.88 × 85 =
33. 33.89 × 92 =
34. 34.91 × 96 =
35. 35.113 × 115 =
36. 36.86 × 89 =
37. 37.113 × 104 =
38. 38.1038 × 1020 =
39. 39.8 × 9 =
40. 40.103 × 102 =

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