Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 843 · 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. 1.99 × 95 =
2. 2.104 × 101 =
3. 3.104 × 110 =
4. 4.8 × 7 =
5. 5.1024 × 1031 =
6. 6.6 × 9 =
7. 7.13 × 14 =
8. 8.11 × 11 =
9. 9.109 × 114 =
10. 10.1009 × 1015 =
11. 11.988 × 969 =
12. 12.115 × 91 =
13. 13.101 × 108 =
14. 14.85 × 90 =
15. 15.9 × 7 =
16. 16.14 × 11 =
17. 17.9 × 6 =
18. 18.14 × 12 =
19. 19.85 × 95 =
20. 20.1011 × 971 =
21. 21.106 × 114 =
22. 22.110 × 85 =
23. 23.107 × 96 =
24. 24.7 × 7 =
25. 25.90 × 93 =
26. 26.979 × 961 =
27. 27.6 × 9 =
28. 28.98 × 96 =
29. 29.11 × 8 =
30. 30.97 × 99 =
31. 31.109 × 107 =
32. 32.11 × 6 =
33. 33.85 × 85 =
34. 34.95 × 97 =
35. 35.87 × 95 =
36. 36.7 × 9 =
37. 37.105 × 86 =
38. 38.103 × 111 =
39. 39.14 × 9 =
40. 40.1027 × 980 =

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