Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 295 · 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. 1.9 × 9 =
2. 2.1004 × 1031 =
3. 3.14 × 11 =
4. 4.97 × 96 =
5. 5.105 × 112 =
6. 6.993 × 974 =
7. 7.115 × 106 =
8. 8.7 × 9 =
9. 9.98 × 94 =
10. 10.1020 × 1027 =
11. 11.13 × 7 =
12. 12.115 × 109 =
13. 13.104 × 106 =
14. 14.107 × 94 =
15. 15.114 × 101 =
16. 16.115 × 103 =
17. 17.87 × 96 =
18. 18.103 × 104 =
19. 19.105 × 106 =
20. 20.974 × 965 =
21. 21.1020 × 999 =
22. 22.91 × 89 =
23. 23.94 × 86 =
24. 24.115 × 109 =
25. 25.103 × 94 =
26. 26.14 × 6 =
27. 27.106 × 104 =
28. 28.91 × 92 =
29. 29.94 × 94 =
30. 30.8 × 8 =
31. 31.1021 × 1025 =
32. 32.1020 × 968 =
33. 33.90 × 87 =
34. 34.102 × 108 =
35. 35.112 × 97 =
36. 36.8 × 8 =
37. 37.1012 × 1006 =
38. 38.6 × 9 =
39. 39.103 × 101 =
40. 40.109 × 106 =

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