Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 902 · 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. 1.12 × 11 =
2. 2.989 × 966 =
3. 3.101 × 107 =
4. 4.9 × 8 =
5. 5.98 × 90 =
6. 6.1003 × 1011 =
7. 7.1029 × 1022 =
8. 8.1014 × 1032 =
9. 9.14 × 13 =
10. 10.986 × 965 =
11. 11.1001 × 974 =
12. 12.85 × 94 =
13. 13.109 × 113 =
14. 14.85 × 86 =
15. 15.102 × 105 =
16. 16.87 × 96 =
17. 17.11 × 12 =
18. 18.101 × 94 =
19. 19.107 × 113 =
20. 20.1031 × 1023 =
21. 21.1034 × 970 =
22. 22.6 × 9 =
23. 23.111 × 101 =
24. 24.103 × 85 =
25. 25.967 × 974 =
26. 26.99 × 86 =
27. 27.87 × 90 =
28. 28.11 × 9 =
29. 29.86 × 99 =
30. 30.9 × 8 =
31. 31.111 × 99 =
32. 32.11 × 13 =
33. 33.7 × 6 =
34. 34.9 × 8 =
35. 35.96 × 93 =
36. 36.8 × 9 =
37. 37.11 × 13 =
38. 38.1032 × 965 =
39. 39.105 × 104 =
40. 40.114 × 95 =

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