Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 619 · 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. 1.110 × 98 =
2. 2.102 × 110 =
3. 3.983 × 982 =
4. 4.105 × 114 =
5. 5.96 × 85 =
6. 6.8 × 6 =
7. 7.104 × 92 =
8. 8.107 × 106 =
9. 9.1009 × 1015 =
10. 10.104 × 96 =
11. 11.107 × 103 =
12. 12.102 × 98 =
13. 13.101 × 92 =
14. 14.94 × 91 =
15. 15.114 × 101 =
16. 16.97 × 87 =
17. 17.86 × 93 =
18. 18.13 × 11 =
19. 19.1001 × 1018 =
20. 20.112 × 108 =
21. 21.1017 × 1020 =
22. 22.7 × 7 =
23. 23.1025 × 987 =
24. 24.112 × 96 =
25. 25.102 × 114 =
26. 26.86 × 94 =
27. 27.7 × 9 =
28. 28.104 × 107 =
29. 29.980 × 976 =
30. 30.6 × 7 =
31. 31.1032 × 977 =
32. 32.91 × 90 =
33. 33.1032 × 1018 =
34. 34.98 × 86 =
35. 35.103 × 102 =
36. 36.114 × 93 =
37. 37.98 × 96 =
38. 38.87 × 93 =
39. 39.14 × 6 =
40. 40.1034 × 1028 =

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