Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 622 · 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. 1.109 × 91 =
2. 2.113 × 115 =
3. 3.106 × 97 =
4. 4.6 × 7 =
5. 5.107 × 111 =
6. 6.1024 × 973 =
7. 7.1018 × 997 =
8. 8.109 × 86 =
9. 9.85 × 96 =
10. 10.1029 × 985 =
11. 11.9 × 6 =
12. 12.11 × 11 =
13. 13.13 × 9 =
14. 14.107 × 89 =
15. 15.99 × 98 =
16. 16.109 × 104 =
17. 17.7 × 6 =
18. 18.1018 × 965 =
19. 19.9 × 9 =
20. 20.96 × 93 =
21. 21.89 × 95 =
22. 22.12 × 6 =
23. 23.1010 × 991 =
24. 24.91 × 94 =
25. 25.110 × 113 =
26. 26.101 × 109 =
27. 27.88 × 95 =
28. 28.105 × 114 =
29. 29.103 × 92 =
30. 30.113 × 99 =
31. 31.7 × 9 =
32. 32.1002 × 1034 =
33. 33.96 × 98 =
34. 34.6 × 8 =
35. 35.11 × 14 =
36. 36.1011 × 985 =
37. 37.12 × 6 =
38. 38.14 × 6 =
39. 39.85 × 96 =
40. 40.114 × 86 =

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