Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 301 · 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. 1.87 × 99 =
2. 2.1011 × 1026 =
3. 3.7 × 7 =
4. 4.995 × 989 =
5. 5.99 × 85 =
6. 6.8 × 8 =
7. 7.8 × 6 =
8. 8.1004 × 1003 =
9. 9.91 × 85 =
10. 10.1030 × 1035 =
11. 11.979 × 968 =
12. 12.86 × 85 =
13. 13.9 × 6 =
14. 14.1022 × 1034 =
15. 15.96 × 98 =
16. 16.1033 × 962 =
17. 17.88 × 89 =
18. 18.9 × 9 =
19. 19.101 × 111 =
20. 20.7 × 7 =
21. 21.14 × 7 =
22. 22.107 × 90 =
23. 23.111 × 96 =
24. 24.983 × 965 =
25. 25.99 × 93 =
26. 26.102 × 89 =
27. 27.105 × 114 =
28. 28.14 × 11 =
29. 29.97 × 97 =
30. 30.980 × 969 =
31. 31.96 × 92 =
32. 32.114 × 103 =
33. 33.111 × 101 =
34. 34.6 × 7 =
35. 35.1028 × 1016 =
36. 36.109 × 103 =
37. 37.88 × 93 =
38. 38.1037 × 1031 =
39. 39.1028 × 969 =
40. 40.91 × 90 =

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