Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 331 · 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 × 101 =
2. 2.112 × 115 =
3. 3.1011 × 1014 =
4. 4.85 × 87 =
5. 5.101 × 114 =
6. 6.9 × 9 =
7. 7.7 × 8 =
8. 8.99 × 97 =
9. 9.109 × 113 =
10. 10.995 × 989 =
11. 11.9 × 7 =
12. 12.109 × 104 =
13. 13.13 × 6 =
14. 14.105 × 110 =
15. 15.13 × 9 =
16. 16.12 × 6 =
17. 17.1003 × 1036 =
18. 18.7 × 8 =
19. 19.14 × 12 =
20. 20.115 × 105 =
21. 21.102 × 97 =
22. 22.115 × 103 =
23. 23.13 × 6 =
24. 24.1007 × 1025 =
25. 25.111 × 90 =
26. 26.996 × 961 =
27. 27.114 × 112 =
28. 28.11 × 14 =
29. 29.975 × 969 =
30. 30.998 × 978 =
31. 31.7 × 8 =
32. 32.92 × 93 =
33. 33.112 × 107 =
34. 34.11 × 14 =
35. 35.12 × 9 =
36. 36.11 × 13 =
37. 37.1015 × 1011 =
38. 38.1039 × 1003 =
39. 39.114 × 107 =
40. 40.1035 × 975 =

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