Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 284 · 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. 1.1012 × 1011 =
2. 2.112 × 85 =
3. 3.87 × 96 =
4. 4.982 × 963 =
5. 5.105 × 109 =
6. 6.108 × 104 =
7. 7.102 × 115 =
8. 8.110 × 94 =
9. 9.11 × 12 =
10. 10.8 × 9 =
11. 11.101 × 102 =
12. 12.111 × 108 =
13. 13.1021 × 1007 =
14. 14.1026 × 1029 =
15. 15.979 × 960 =
16. 16.95 × 90 =
17. 17.97 × 92 =
18. 18.113 × 109 =
19. 19.88 × 98 =
20. 20.91 × 94 =
21. 21.102 × 110 =
22. 22.7 × 7 =
23. 23.1024 × 997 =
24. 24.112 × 101 =
25. 25.14 × 13 =
26. 26.89 × 85 =
27. 27.87 × 88 =
28. 28.1008 × 979 =
29. 29.6 × 9 =
30. 30.986 × 974 =
31. 31.1001 × 1004 =
32. 32.89 × 99 =
33. 33.85 × 87 =
34. 34.14 × 9 =
35. 35.6 × 7 =
36. 36.962 × 989 =
37. 37.111 × 99 =
38. 38.9 × 8 =
39. 39.6 × 8 =
40. 40.97 × 86 =

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