Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 575 · 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. 1.12 × 12 =
2. 2.109 × 96 =
3. 3.86 × 92 =
4. 4.103 × 93 =
5. 5.1010 × 1007 =
6. 6.11 × 11 =
7. 7.99 × 99 =
8. 8.984 × 990 =
9. 9.1009 × 1011 =
10. 10.106 × 109 =
11. 11.11 × 8 =
12. 12.6 × 6 =
13. 13.13 × 8 =
14. 14.1024 × 1030 =
15. 15.12 × 9 =
16. 16.13 × 12 =
17. 17.6 × 6 =
18. 18.6 × 7 =
19. 19.1008 × 961 =
20. 20.104 × 109 =
21. 21.104 × 109 =
22. 22.1017 × 1026 =
23. 23.112 × 89 =
24. 24.88 × 97 =
25. 25.961 × 965 =
26. 26.13 × 7 =
27. 27.11 × 12 =
28. 28.7 × 6 =
29. 29.6 × 9 =
30. 30.11 × 9 =
31. 31.111 × 106 =
32. 32.962 × 961 =
33. 33.89 × 93 =
34. 34.106 × 101 =
35. 35.113 × 94 =
36. 36.1015 × 979 =
37. 37.969 × 996 =
38. 38.1039 × 1013 =
39. 39.115 × 96 =
40. 40.8 × 9 =

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