Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 151 · 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. 2.85 × 92 =
3. 3.90 × 88 =
4. 4.9 × 6 =
5. 5.111 × 96 =
6. 6.98 × 91 =
7. 7.109 × 113 =
8. 8.114 × 99 =
9. 9.9 × 9 =
10. 10.115 × 111 =
11. 11.111 × 113 =
12. 12.1034 × 1027 =
13. 13.6 × 9 =
14. 14.1020 × 997 =
15. 15.1019 × 1016 =
16. 16.7 × 7 =
17. 17.86 × 87 =
18. 18.107 × 105 =
19. 19.101 × 86 =
20. 20.12 × 14 =
21. 21.96 × 85 =
22. 22.113 × 96 =
23. 23.7 × 6 =
24. 24.11 × 8 =
25. 25.6 × 6 =
26. 26.14 × 8 =
27. 27.105 × 85 =
28. 28.8 × 8 =
29. 29.11 × 6 =
30. 30.14 × 7 =
31. 31.997 × 965 =
32. 32.1013 × 1020 =
33. 33.105 × 106 =
34. 34.96 × 97 =
35. 35.111 × 92 =
36. 36.114 × 106 =
37. 37.97 × 95 =
38. 38.113 × 87 =
39. 39.94 × 95 =
40. 40.9 × 9 =

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