Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 610 · 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. 1.12 × 8 =
2. 2.8 × 8 =
3. 3.14 × 14 =
4. 4.97 × 98 =
5. 5.114 × 103 =
6. 6.108 × 85 =
7. 7.11 × 9 =
8. 8.997 × 982 =
9. 9.115 × 107 =
10. 10.1012 × 1021 =
11. 11.992 × 971 =
12. 12.89 × 96 =
13. 13.6 × 6 =
14. 14.108 × 113 =
15. 15.90 × 89 =
16. 16.99 × 92 =
17. 17.989 × 997 =
18. 18.13 × 12 =
19. 19.8 × 9 =
20. 20.87 × 92 =
21. 21.101 × 87 =
22. 22.1009 × 977 =
23. 23.13 × 6 =
24. 24.106 × 107 =
25. 25.13 × 13 =
26. 26.85 × 98 =
27. 27.968 × 997 =
28. 28.99 × 95 =
29. 29.115 × 105 =
30. 30.114 × 111 =
31. 31.8 × 9 =
32. 32.113 × 113 =
33. 33.105 × 114 =
34. 34.14 × 11 =
35. 35.87 × 95 =
36. 36.102 × 108 =
37. 37.991 × 992 =
38. 38.108 × 103 =
39. 39.90 × 91 =
40. 40.110 × 109 =

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