Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 474 · 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. 1.115 × 104 =
2. 2.110 × 112 =
3. 3.7 × 7 =
4. 4.12 × 13 =
5. 5.113 × 105 =
6. 6.86 × 97 =
7. 7.12 × 7 =
8. 8.1004 × 1037 =
9. 9.107 × 99 =
10. 10.7 × 6 =
11. 11.112 × 95 =
12. 12.108 × 95 =
13. 13.109 × 104 =
14. 14.972 × 978 =
15. 15.101 × 113 =
16. 16.1016 × 1009 =
17. 17.92 × 89 =
18. 18.113 × 110 =
19. 19.1008 × 983 =
20. 20.94 × 95 =
21. 21.12 × 9 =
22. 22.986 × 986 =
23. 23.12 × 8 =
24. 24.104 × 91 =
25. 25.11 × 9 =
26. 26.7 × 9 =
27. 27.989 × 984 =
28. 28.976 × 994 =
29. 29.9 × 7 =
30. 30.109 × 93 =
31. 31.108 × 101 =
32. 32.1029 × 1011 =
33. 33.115 × 105 =
34. 34.1004 × 1032 =
35. 35.112 × 96 =
36. 36.998 × 998 =
37. 37.106 × 105 =
38. 38.114 × 110 =
39. 39.101 × 90 =
40. 40.114 × 91 =

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