Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 195 · 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. 1.1030 × 1004 =
2. 2.98 × 85 =
3. 3.12 × 14 =
4. 4.1002 × 1032 =
5. 5.101 × 106 =
6. 6.98 × 88 =
7. 7.86 × 96 =
8. 8.1013 × 1037 =
9. 9.1032 × 1010 =
10. 10.993 × 988 =
11. 11.106 × 98 =
12. 12.1002 × 978 =
13. 13.974 × 961 =
14. 14.114 × 85 =
15. 15.982 × 964 =
16. 16.102 × 86 =
17. 17.1028 × 1015 =
18. 18.106 × 102 =
19. 19.11 × 12 =
20. 20.1037 × 1031 =
21. 21.1009 × 1033 =
22. 22.111 × 108 =
23. 23.11 × 14 =
24. 24.105 × 86 =
25. 25.6 × 6 =
26. 26.11 × 14 =
27. 27.85 × 97 =
28. 28.101 × 87 =
29. 29.14 × 7 =
30. 30.101 × 113 =
31. 31.8 × 9 =
32. 32.997 × 986 =
33. 33.6 × 9 =
34. 34.106 × 85 =
35. 35.14 × 8 =
36. 36.12 × 11 =
37. 37.1005 × 963 =
38. 38.110 × 108 =
39. 39.89 × 88 =
40. 40.1012 × 987 =

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