Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 654 · 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. 1.103 × 103 =
2. 2.104 × 107 =
3. 3.1023 × 1011 =
4. 4.97 × 98 =
5. 5.991 × 982 =
6. 6.94 × 95 =
7. 7.101 × 112 =
8. 8.13 × 7 =
9. 9.104 × 105 =
10. 10.1037 × 989 =
11. 11.105 × 113 =
12. 12.12 × 13 =
13. 13.111 × 88 =
14. 14.93 × 94 =
15. 15.995 × 998 =
16. 16.86 × 89 =
17. 17.106 × 103 =
18. 18.973 × 989 =
19. 19.14 × 14 =
20. 20.87 × 88 =
21. 21.86 × 93 =
22. 22.103 × 105 =
23. 23.6 × 6 =
24. 24.11 × 6 =
25. 25.13 × 14 =
26. 26.6 × 6 =
27. 27.104 × 114 =
28. 28.987 × 960 =
29. 29.108 × 110 =
30. 30.11 × 12 =
31. 31.9 × 7 =
32. 32.91 × 96 =
33. 33.6 × 7 =
34. 34.89 × 93 =
35. 35.977 × 987 =
36. 36.105 × 115 =
37. 37.113 × 98 =
38. 38.107 × 92 =
39. 39.1023 × 1012 =
40. 40.104 × 93 =

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