Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 131 · 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. 1.105 × 103 =
2. 2.9 × 9 =
3. 3.89 × 98 =
4. 4.13 × 8 =
5. 5.9 × 6 =
6. 6.6 × 7 =
7. 7.1039 × 991 =
8. 8.85 × 87 =
9. 9.1007 × 1033 =
10. 10.87 × 98 =
11. 11.88 × 93 =
12. 12.1009 × 990 =
13. 13.14 × 14 =
14. 14.110 × 107 =
15. 15.8 × 9 =
16. 16.11 × 14 =
17. 17.114 × 113 =
18. 18.91 × 87 =
19. 19.115 × 111 =
20. 20.93 × 94 =
21. 21.97 × 85 =
22. 22.88 × 95 =
23. 23.6 × 9 =
24. 24.92 × 91 =
25. 25.1011 × 987 =
26. 26.8 × 8 =
27. 27.109 × 95 =
28. 28.8 × 9 =
29. 29.12 × 7 =
30. 30.1003 × 984 =
31. 31.99 × 90 =
32. 32.101 × 105 =
33. 33.103 × 99 =
34. 34.978 × 987 =
35. 35.1026 × 1001 =
36. 36.972 × 988 =
37. 37.11 × 11 =
38. 38.12 × 12 =
39. 39.12 × 11 =
40. 40.1007 × 1028 =

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