Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 191 · 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 × 7 =
2. 2.13 × 8 =
3. 3.1034 × 1004 =
4. 4.984 × 985 =
5. 5.13 × 14 =
6. 6.92 × 96 =
7. 7.106 × 110 =
8. 8.115 × 114 =
9. 9.103 × 103 =
10. 10.104 × 97 =
11. 11.997 × 991 =
12. 12.6 × 7 =
13. 13.90 × 86 =
14. 14.7 × 9 =
15. 15.973 × 980 =
16. 16.13 × 7 =
17. 17.111 × 101 =
18. 18.994 × 978 =
19. 19.12 × 11 =
20. 20.14 × 8 =
21. 21.7 × 7 =
22. 22.96 × 92 =
23. 23.108 × 99 =
24. 24.106 × 91 =
25. 25.12 × 9 =
26. 26.88 × 90 =
27. 27.101 × 109 =
28. 28.105 × 97 =
29. 29.86 × 88 =
30. 30.8 × 9 =
31. 31.1028 × 1031 =
32. 32.963 × 988 =
33. 33.106 × 114 =
34. 34.985 × 979 =
35. 35.13 × 12 =
36. 36.98 × 85 =
37. 37.88 × 87 =
38. 38.13 × 9 =
39. 39.14 × 9 =
40. 40.1011 × 982 =

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