Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 411 · 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. 1.1009 × 1008 =
2. 2.1003 × 982 =
3. 3.14 × 9 =
4. 4.96 × 98 =
5. 5.91 × 86 =
6. 6.970 × 962 =
7. 7.87 × 97 =
8. 8.8 × 9 =
9. 9.11 × 6 =
10. 10.109 × 91 =
11. 11.109 × 105 =
12. 12.972 × 964 =
13. 13.105 × 91 =
14. 14.92 × 90 =
15. 15.14 × 11 =
16. 16.99 × 85 =
17. 17.9 × 8 =
18. 18.11 × 14 =
19. 19.112 × 104 =
20. 20.1005 × 988 =
21. 21.13 × 11 =
22. 22.109 × 102 =
23. 23.111 × 105 =
24. 24.1029 × 1026 =
25. 25.104 × 96 =
26. 26.94 × 86 =
27. 27.113 × 94 =
28. 28.13 × 6 =
29. 29.114 × 114 =
30. 30.105 × 103 =
31. 31.86 × 99 =
32. 32.11 × 7 =
33. 33.113 × 107 =
34. 34.114 × 93 =
35. 35.95 × 99 =
36. 36.115 × 108 =
37. 37.13 × 8 =
38. 38.111 × 93 =
39. 39.103 × 113 =
40. 40.12 × 12 =

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