Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 241 · 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. 1.9 × 9 =
2. 2.1001 × 1028 =
3. 3.107 × 104 =
4. 4.1005 × 1003 =
5. 5.966 × 965 =
6. 6.8 × 7 =
7. 7.111 × 99 =
8. 8.96 × 97 =
9. 9.115 × 111 =
10. 10.8 × 7 =
11. 11.97 × 98 =
12. 12.1024 × 997 =
13. 13.13 × 7 =
14. 14.112 × 91 =
15. 15.7 × 8 =
16. 16.85 × 93 =
17. 17.94 × 87 =
18. 18.978 × 993 =
19. 19.12 × 14 =
20. 20.103 × 109 =
21. 21.6 × 7 =
22. 22.89 × 98 =
23. 23.95 × 88 =
24. 24.85 × 89 =
25. 25.102 × 113 =
26. 26.115 × 110 =
27. 27.110 × 91 =
28. 28.9 × 7 =
29. 29.93 × 94 =
30. 30.102 × 86 =
31. 31.115 × 107 =
32. 32.7 × 7 =
33. 33.14 × 13 =
34. 34.114 × 89 =
35. 35.86 × 95 =
36. 36.90 × 92 =
37. 37.967 × 990 =
38. 38.95 × 97 =
39. 39.1024 × 962 =
40. 40.7 × 7 =

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