Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 199 · 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. 1.101 × 104 =
2. 2.102 × 98 =
3. 3.110 × 109 =
4. 4.92 × 89 =
5. 5.114 × 105 =
6. 6.108 × 97 =
7. 7.113 × 97 =
8. 8.13 × 13 =
9. 9.1003 × 1003 =
10. 10.968 × 966 =
11. 11.1034 × 989 =
12. 12.90 × 99 =
13. 13.101 × 104 =
14. 14.107 × 89 =
15. 15.104 × 115 =
16. 16.12 × 11 =
17. 17.110 × 111 =
18. 18.1029 × 969 =
19. 19.13 × 11 =
20. 20.7 × 7 =
21. 21.93 × 88 =
22. 22.14 × 12 =
23. 23.105 × 97 =
24. 24.6 × 6 =
25. 25.88 × 89 =
26. 26.104 × 87 =
27. 27.86 × 90 =
28. 28.969 × 972 =
29. 29.87 × 86 =
30. 30.9 × 8 =
31. 31.115 × 108 =
32. 32.94 × 91 =
33. 33.111 × 95 =
34. 34.113 × 105 =
35. 35.106 × 111 =
36. 36.12 × 6 =
37. 37.98 × 94 =
38. 38.105 × 92 =
39. 39.111 × 113 =
40. 40.1013 × 993 =

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