Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 678 · 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 × 110 =
2. 2.103 × 113 =
3. 3.111 × 109 =
4. 4.9 × 9 =
5. 5.109 × 87 =
6. 6.13 × 14 =
7. 7.96 × 97 =
8. 8.1004 × 981 =
9. 9.93 × 93 =
10. 10.965 × 987 =
11. 11.88 × 88 =
12. 12.1011 × 1030 =
13. 13.112 × 113 =
14. 14.105 × 102 =
15. 15.6 × 9 =
16. 16.6 × 7 =
17. 17.6 × 6 =
18. 18.6 × 7 =
19. 19.90 × 86 =
20. 20.11 × 9 =
21. 21.102 × 109 =
22. 22.106 × 101 =
23. 23.91 × 88 =
24. 24.115 × 108 =
25. 25.103 × 114 =
26. 26.109 × 97 =
27. 27.112 × 97 =
28. 28.85 × 97 =
29. 29.88 × 89 =
30. 30.108 × 109 =
31. 31.988 × 988 =
32. 32.112 × 106 =
33. 33.91 × 92 =
34. 34.13 × 11 =
35. 35.104 × 115 =
36. 36.102 × 102 =
37. 37.101 × 95 =
38. 38.13 × 6 =
39. 39.995 × 990 =
40. 40.102 × 110 =

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