Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 225 · 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. 1.1040 × 979 =
2. 2.105 × 107 =
3. 3.96 × 86 =
4. 4.113 × 115 =
5. 5.970 × 976 =
6. 6.1002 × 1011 =
7. 7.12 × 12 =
8. 8.96 × 97 =
9. 9.6 × 8 =
10. 10.111 × 103 =
11. 11.113 × 86 =
12. 12.1011 × 987 =
13. 13.96 × 92 =
14. 14.1026 × 972 =
15. 15.92 × 95 =
16. 16.113 × 104 =
17. 17.1017 × 1016 =
18. 18.11 × 11 =
19. 19.101 × 96 =
20. 20.105 × 93 =
21. 21.13 × 7 =
22. 22.99 × 85 =
23. 23.12 × 6 =
24. 24.8 × 7 =
25. 25.112 × 102 =
26. 26.106 × 103 =
27. 27.110 × 93 =
28. 28.110 × 106 =
29. 29.1010 × 970 =
30. 30.90 × 93 =
31. 31.12 × 13 =
32. 32.1013 × 1027 =
33. 33.111 × 97 =
34. 34.8 × 9 =
35. 35.114 × 102 =
36. 36.1018 × 1027 =
37. 37.1035 × 965 =
38. 38.12 × 14 =
39. 39.989 × 960 =
40. 40.1035 × 961 =

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