Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 723 · 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 × 991 =
2. 2.9 × 9 =
3. 3.108 × 102 =
4. 4.114 × 89 =
5. 5.105 × 95 =
6. 6.1007 × 992 =
7. 7.99 × 89 =
8. 8.114 × 89 =
9. 9.115 × 113 =
10. 10.107 × 106 =
11. 11.112 × 97 =
12. 12.11 × 7 =
13. 13.7 × 7 =
14. 14.107 × 105 =
15. 15.96 × 98 =
16. 16.110 × 93 =
17. 17.107 × 113 =
18. 18.96 × 94 =
19. 19.14 × 11 =
20. 20.114 × 104 =
21. 21.103 × 91 =
22. 22.988 × 996 =
23. 23.1019 × 973 =
24. 24.1039 × 985 =
25. 25.91 × 85 =
26. 26.98 × 88 =
27. 27.107 × 87 =
28. 28.105 × 111 =
29. 29.101 × 96 =
30. 30.90 × 89 =
31. 31.111 × 108 =
32. 32.106 × 105 =
33. 33.107 × 105 =
34. 34.1034 × 1009 =
35. 35.981 × 988 =
36. 36.12 × 12 =
37. 37.992 × 962 =
38. 38.6 × 8 =
39. 39.101 × 108 =
40. 40.988 × 997 =

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