Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 66 · 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. 1.11 × 11 =
2. 2.11 × 9 =
3. 3.108 × 108 =
4. 4.11 × 12 =
5. 5.994 × 974 =
6. 6.11 × 13 =
7. 7.6 × 7 =
8. 8.1020 × 1022 =
9. 9.9 × 7 =
10. 10.6 × 6 =
11. 11.11 × 12 =
12. 12.11 × 13 =
13. 13.99 × 86 =
14. 14.103 × 113 =
15. 15.108 × 114 =
16. 16.85 × 89 =
17. 17.111 × 112 =
18. 18.109 × 95 =
19. 19.115 × 85 =
20. 20.13 × 6 =
21. 21.94 × 90 =
22. 22.11 × 11 =
23. 23.14 × 14 =
24. 24.7 × 7 =
25. 25.103 × 103 =
26. 26.9 × 8 =
27. 27.14 × 6 =
28. 28.1001 × 1039 =
29. 29.86 × 94 =
30. 30.113 × 92 =
31. 31.9 × 7 =
32. 32.988 × 975 =
33. 33.967 × 969 =
34. 34.8 × 8 =
35. 35.12 × 7 =
36. 36.1023 × 1038 =
37. 37.1037 × 1006 =
38. 38.95 × 97 =
39. 39.112 × 93 =
40. 40.7 × 9 =

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