Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 779 · 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. 1.113 × 92 =
2. 2.102 × 101 =
3. 3.7 × 9 =
4. 4.7 × 7 =
5. 5.1040 × 1005 =
6. 6.103 × 107 =
7. 7.109 × 96 =
8. 8.1028 × 1027 =
9. 9.1018 × 1007 =
10. 10.14 × 11 =
11. 11.12 × 6 =
12. 12.85 × 95 =
13. 13.993 × 965 =
14. 14.7 × 9 =
15. 15.115 × 102 =
16. 16.97 × 92 =
17. 17.986 × 984 =
18. 18.966 × 962 =
19. 19.98 × 88 =
20. 20.11 × 6 =
21. 21.93 × 95 =
22. 22.1022 × 1016 =
23. 23.6 × 8 =
24. 24.12 × 7 =
25. 25.8 × 9 =
26. 26.1039 × 1040 =
27. 27.1016 × 1032 =
28. 28.14 × 11 =
29. 29.1025 × 1039 =
30. 30.95 × 88 =
31. 31.972 × 965 =
32. 32.11 × 14 =
33. 33.8 × 7 =
34. 34.110 × 94 =
35. 35.111 × 115 =
36. 36.7 × 7 =
37. 37.9 × 6 =
38. 38.991 × 996 =
39. 39.8 × 6 =
40. 40.969 × 983 =

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