Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 513 · 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. 1.102 × 112 =
2. 2.8 × 8 =
3. 3.11 × 12 =
4. 4.13 × 11 =
5. 5.9 × 6 =
6. 6.92 × 98 =
7. 7.1034 × 995 =
8. 8.91 × 95 =
9. 9.1039 × 1012 =
10. 10.968 × 987 =
11. 11.971 × 966 =
12. 12.101 × 86 =
13. 13.994 × 998 =
14. 14.99 × 85 =
15. 15.105 × 89 =
16. 16.101 × 87 =
17. 17.105 × 106 =
18. 18.103 × 115 =
19. 19.103 × 115 =
20. 20.14 × 8 =
21. 21.8 × 7 =
22. 22.101 × 113 =
23. 23.91 × 97 =
24. 24.966 × 979 =
25. 25.12 × 11 =
26. 26.93 × 96 =
27. 27.12 × 12 =
28. 28.1015 × 988 =
29. 29.1013 × 1036 =
30. 30.101 × 90 =
31. 31.999 × 988 =
32. 32.8 × 8 =
33. 33.92 × 99 =
34. 34.94 × 99 =
35. 35.101 × 110 =
36. 36.11 × 14 =
37. 37.90 × 89 =
38. 38.13 × 8 =
39. 39.8 × 7 =
40. 40.95 × 96 =

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