Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 976 · 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. 1.90 × 98 =
2. 2.1010 × 1018 =
3. 3.92 × 99 =
4. 4.91 × 85 =
5. 5.9 × 6 =
6. 6.1036 × 1011 =
7. 7.114 × 114 =
8. 8.92 × 98 =
9. 9.12 × 9 =
10. 10.112 × 99 =
11. 11.92 × 91 =
12. 12.114 × 105 =
13. 13.1031 × 998 =
14. 14.110 × 98 =
15. 15.91 × 94 =
16. 16.98 × 86 =
17. 17.977 × 991 =
18. 18.1016 × 984 =
19. 19.112 × 114 =
20. 20.1016 × 1024 =
21. 21.101 × 113 =
22. 22.103 × 115 =
23. 23.104 × 109 =
24. 24.13 × 11 =
25. 25.13 × 14 =
26. 26.12 × 13 =
27. 27.89 × 92 =
28. 28.11 × 11 =
29. 29.94 × 93 =
30. 30.85 × 94 =
31. 31.965 × 969 =
32. 32.7 × 6 =
33. 33.970 × 967 =
34. 34.12 × 11 =
35. 35.1034 × 976 =
36. 36.9 × 9 =
37. 37.975 × 994 =
38. 38.88 × 96 =
39. 39.969 × 977 =
40. 40.982 × 969 =

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