Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 989 · 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. 1.85 × 91 =
2. 2.112 × 95 =
3. 3.994 × 968 =
4. 4.11 × 7 =
5. 5.1039 × 981 =
6. 6.8 × 9 =
7. 7.7 × 9 =
8. 8.965 × 987 =
9. 9.1026 × 1014 =
10. 10.108 × 107 =
11. 11.6 × 8 =
12. 12.109 × 110 =
13. 13.107 × 108 =
14. 14.108 × 95 =
15. 15.114 × 109 =
16. 16.97 × 93 =
17. 17.93 × 95 =
18. 18.113 × 87 =
19. 19.14 × 8 =
20. 20.14 × 14 =
21. 21.1031 × 1029 =
22. 22.14 × 8 =
23. 23.87 × 87 =
24. 24.11 × 6 =
25. 25.14 × 8 =
26. 26.7 × 9 =
27. 27.12 × 9 =
28. 28.12 × 12 =
29. 29.1001 × 1035 =
30. 30.8 × 8 =
31. 31.6 × 9 =
32. 32.105 × 111 =
33. 33.993 × 984 =
34. 34.12 × 8 =
35. 35.85 × 89 =
36. 36.98 × 89 =
37. 37.970 × 988 =
38. 38.86 × 94 =
39. 39.105 × 92 =
40. 40.1002 × 1026 =

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