Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 118 · 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. 1.1039 × 1011 =
2. 2.90 × 92 =
3. 3.6 × 6 =
4. 4.98 × 90 =
5. 5.11 × 9 =
6. 6.14 × 9 =
7. 7.98 × 98 =
8. 8.89 × 91 =
9. 9.103 × 95 =
10. 10.973 × 998 =
11. 11.969 × 964 =
12. 12.98 × 87 =
13. 13.102 × 99 =
14. 14.88 × 90 =
15. 15.111 × 99 =
16. 16.94 × 90 =
17. 17.106 × 110 =
18. 18.89 × 87 =
19. 19.97 × 89 =
20. 20.979 × 976 =
21. 21.11 × 12 =
22. 22.102 × 111 =
23. 23.989 × 997 =
24. 24.992 × 990 =
25. 25.8 × 7 =
26. 26.99 × 87 =
27. 27.7 × 7 =
28. 28.976 × 987 =
29. 29.11 × 11 =
30. 30.110 × 101 =
31. 31.966 × 976 =
32. 32.97 × 97 =
33. 33.87 × 96 =
34. 34.106 × 112 =
35. 35.113 × 113 =
36. 36.112 × 105 =
37. 37.970 × 991 =
38. 38.101 × 106 =
39. 39.1014 × 1032 =
40. 40.12 × 8 =

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