Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 176 · 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. 1.90 × 91 =
2. 2.974 × 988 =
3. 3.113 × 114 =
4. 4.1031 × 1011 =
5. 5.1014 × 1017 =
6. 6.94 × 97 =
7. 7.90 × 85 =
8. 8.7 × 7 =
9. 9.13 × 14 =
10. 10.97 × 85 =
11. 11.108 × 99 =
12. 12.85 × 93 =
13. 13.9 × 7 =
14. 14.12 × 11 =
15. 15.89 × 89 =
16. 16.92 × 93 =
17. 17.7 × 9 =
18. 18.9 × 6 =
19. 19.88 × 87 =
20. 20.6 × 8 =
21. 21.14 × 11 =
22. 22.1008 × 1027 =
23. 23.978 × 995 =
24. 24.114 × 101 =
25. 25.105 × 110 =
26. 26.1019 × 1031 =
27. 27.106 × 99 =
28. 28.1002 × 1022 =
29. 29.13 × 7 =
30. 30.103 × 105 =
31. 31.6 × 9 =
32. 32.85 × 92 =
33. 33.14 × 12 =
34. 34.93 × 97 =
35. 35.101 × 108 =
36. 36.109 × 98 =
37. 37.106 × 94 =
38. 38.14 × 13 =
39. 39.91 × 90 =
40. 40.1018 × 994 =

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