Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 124 · 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. 1.998 × 990 =
2. 2.8 × 8 =
3. 3.11 × 13 =
4. 4.108 × 104 =
5. 5.96 × 91 =
6. 6.11 × 11 =
7. 7.87 × 91 =
8. 8.87 × 94 =
9. 9.11 × 6 =
10. 10.104 × 85 =
11. 11.86 × 96 =
12. 12.101 × 113 =
13. 13.110 × 92 =
14. 14.1030 × 994 =
15. 15.96 × 89 =
16. 16.98 × 94 =
17. 17.104 × 113 =
18. 18.111 × 92 =
19. 19.102 × 99 =
20. 20.110 × 108 =
21. 21.105 × 107 =
22. 22.85 × 87 =
23. 23.106 × 105 =
24. 24.99 × 92 =
25. 25.114 × 110 =
26. 26.98 × 95 =
27. 27.115 × 103 =
28. 28.102 × 108 =
29. 29.99 × 87 =
30. 30.6 × 8 =
31. 31.90 × 89 =
32. 32.85 × 95 =
33. 33.103 × 93 =
34. 34.104 × 109 =
35. 35.968 × 961 =
36. 36.965 × 960 =
37. 37.9 × 8 =
38. 38.1022 × 1038 =
39. 39.97 × 99 =
40. 40.12 × 14 =

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