Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 348 · 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. 1.106 × 111 =
2. 2.92 × 91 =
3. 3.102 × 96 =
4. 4.110 × 105 =
5. 5.102 × 85 =
6. 6.13 × 7 =
7. 7.90 × 86 =
8. 8.114 × 102 =
9. 9.112 × 96 =
10. 10.9 × 9 =
11. 11.97 × 91 =
12. 12.1003 × 1039 =
13. 13.103 × 93 =
14. 14.998 × 981 =
15. 15.99 × 92 =
16. 16.86 × 93 =
17. 17.976 × 969 =
18. 18.101 × 115 =
19. 19.975 × 977 =
20. 20.7 × 9 =
21. 21.11 × 11 =
22. 22.982 × 976 =
23. 23.12 × 7 =
24. 24.6 × 7 =
25. 25.112 × 89 =
26. 26.988 × 991 =
27. 27.103 × 103 =
28. 28.89 × 89 =
29. 29.8 × 9 =
30. 30.13 × 9 =
31. 31.1004 × 1020 =
32. 32.1004 × 1038 =
33. 33.112 × 89 =
34. 34.98 × 89 =
35. 35.101 × 102 =
36. 36.1019 × 1005 =
37. 37.95 × 90 =
38. 38.989 × 988 =
39. 39.115 × 111 =
40. 40.94 × 99 =

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