Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 208 · 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. 1.102 × 99 =
2. 2.11 × 14 =
3. 3.99 × 95 =
4. 4.104 × 101 =
5. 5.13 × 11 =
6. 6.114 × 96 =
7. 7.1016 × 960 =
8. 8.1028 × 992 =
9. 9.113 × 112 =
10. 10.13 × 6 =
11. 11.13 × 9 =
12. 12.969 × 995 =
13. 13.97 × 90 =
14. 14.13 × 9 =
15. 15.115 × 93 =
16. 16.112 × 107 =
17. 17.997 × 983 =
18. 18.87 × 86 =
19. 19.12 × 8 =
20. 20.12 × 9 =
21. 21.86 × 90 =
22. 22.1027 × 1005 =
23. 23.111 × 103 =
24. 24.7 × 9 =
25. 25.9 × 8 =
26. 26.11 × 7 =
27. 27.108 × 90 =
28. 28.92 × 93 =
29. 29.115 × 101 =
30. 30.8 × 9 =
31. 31.109 × 112 =
32. 32.113 × 93 =
33. 33.14 × 12 =
34. 34.963 × 964 =
35. 35.97 × 97 =
36. 36.9 × 9 =
37. 37.1033 × 993 =
38. 38.115 × 87 =
39. 39.114 × 99 =
40. 40.104 × 91 =

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