Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 256 · 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. 1.6 × 7 =
2. 2.101 × 99 =
3. 3.97 × 94 =
4. 4.989 × 989 =
5. 5.11 × 11 =
6. 6.1004 × 976 =
7. 7.997 × 982 =
8. 8.113 × 113 =
9. 9.14 × 9 =
10. 10.13 × 9 =
11. 11.87 × 91 =
12. 12.13 × 13 =
13. 13.92 × 93 =
14. 14.102 × 99 =
15. 15.91 × 98 =
16. 16.109 × 87 =
17. 17.6 × 7 =
18. 18.101 × 104 =
19. 19.112 × 94 =
20. 20.115 × 113 =
21. 21.91 × 96 =
22. 22.105 × 93 =
23. 23.86 × 95 =
24. 24.8 × 6 =
25. 25.102 × 104 =
26. 26.107 × 104 =
27. 27.6 × 8 =
28. 28.1012 × 977 =
29. 29.94 × 98 =
30. 30.112 × 111 =
31. 31.94 × 86 =
32. 32.988 × 968 =
33. 33.85 × 96 =
34. 34.115 × 91 =
35. 35.1019 × 1029 =
36. 36.101 × 101 =
37. 37.1037 × 1009 =
38. 38.101 × 111 =
39. 39.98 × 95 =
40. 40.97 × 86 =

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