Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 102 · 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. 1.92 × 87 =
2. 2.978 × 973 =
3. 3.95 × 96 =
4. 4.12 × 11 =
5. 5.8 × 8 =
6. 6.92 × 99 =
7. 7.112 × 107 =
8. 8.11 × 9 =
9. 9.107 × 102 =
10. 10.110 × 102 =
11. 11.14 × 14 =
12. 12.14 × 13 =
13. 13.976 × 977 =
14. 14.112 × 115 =
15. 15.1016 × 1016 =
16. 16.94 × 98 =
17. 17.108 × 102 =
18. 18.14 × 11 =
19. 19.98 × 92 =
20. 20.98 × 92 =
21. 21.1022 × 1009 =
22. 22.109 × 107 =
23. 23.103 × 101 =
24. 24.8 × 7 =
25. 25.107 × 96 =
26. 26.1031 × 1013 =
27. 27.1015 × 1012 =
28. 28.9 × 7 =
29. 29.107 × 108 =
30. 30.90 × 90 =
31. 31.86 × 89 =
32. 32.1003 × 998 =
33. 33.998 × 984 =
34. 34.12 × 14 =
35. 35.113 × 97 =
36. 36.8 × 9 =
37. 37.1027 × 965 =
38. 38.8 × 9 =
39. 39.6 × 8 =
40. 40.12 × 9 =

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