Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 402 · 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. 1.11 × 11 =
2. 2.101 × 86 =
3. 3.104 × 106 =
4. 4.109 × 101 =
5. 5.13 × 14 =
6. 6.97 × 95 =
7. 7.1003 × 981 =
8. 8.99 × 96 =
9. 9.102 × 87 =
10. 10.1012 × 966 =
11. 11.115 × 110 =
12. 12.12 × 12 =
13. 13.113 × 89 =
14. 14.115 × 114 =
15. 15.7 × 8 =
16. 16.102 × 101 =
17. 17.97 × 99 =
18. 18.6 × 9 =
19. 19.1022 × 1028 =
20. 20.110 × 110 =
21. 21.92 × 86 =
22. 22.11 × 6 =
23. 23.89 × 90 =
24. 24.1013 × 991 =
25. 25.997 × 963 =
26. 26.1012 × 993 =
27. 27.102 × 101 =
28. 28.87 × 99 =
29. 29.9 × 7 =
30. 30.6 × 7 =
31. 31.7 × 8 =
32. 32.1027 × 985 =
33. 33.105 × 102 =
34. 34.94 × 98 =
35. 35.113 × 104 =
36. 36.9 × 7 =
37. 37.93 × 87 =
38. 38.114 × 87 =
39. 39.109 × 114 =
40. 40.110 × 96 =

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