Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 909 · 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. 2.13 × 12 =
3. 3.115 × 111 =
4. 4.93 × 85 =
5. 5.99 × 95 =
6. 6.13 × 7 =
7. 7.12 × 13 =
8. 8.107 × 85 =
9. 9.115 × 105 =
10. 10.11 × 9 =
11. 11.1001 × 1012 =
12. 12.110 × 101 =
13. 13.12 × 13 =
14. 14.111 × 103 =
15. 15.90 × 99 =
16. 16.97 × 94 =
17. 17.104 × 91 =
18. 18.90 × 95 =
19. 19.95 × 89 =
20. 20.12 × 11 =
21. 21.95 × 94 =
22. 22.115 × 107 =
23. 23.109 × 108 =
24. 24.11 × 7 =
25. 25.8 × 6 =
26. 26.95 × 94 =
27. 27.1032 × 1003 =
28. 28.14 × 11 =
29. 29.965 × 984 =
30. 30.110 × 90 =
31. 31.1012 × 1005 =
32. 32.105 × 87 =
33. 33.89 × 85 =
34. 34.1030 × 988 =
35. 35.96 × 97 =
36. 36.12 × 6 =
37. 37.12 × 12 =
38. 38.91 × 89 =
39. 39.86 × 95 =
40. 40.115 × 91 =

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