Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 727 · 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. 1.1023 × 1026 =
2. 2.105 × 109 =
3. 3.9 × 9 =
4. 4.86 × 95 =
5. 5.11 × 14 =
6. 6.93 × 95 =
7. 7.98 × 92 =
8. 8.12 × 7 =
9. 9.92 × 99 =
10. 10.91 × 98 =
11. 11.14 × 11 =
12. 12.8 × 9 =
13. 13.1039 × 1026 =
14. 14.13 × 6 =
15. 15.112 × 113 =
16. 16.6 × 6 =
17. 17.109 × 106 =
18. 18.12 × 11 =
19. 19.11 × 11 =
20. 20.91 × 89 =
21. 21.1017 × 1011 =
22. 22.11 × 13 =
23. 23.11 × 14 =
24. 24.6 × 6 =
25. 25.1028 × 960 =
26. 26.9 × 6 =
27. 27.101 × 112 =
28. 28.994 × 984 =
29. 29.99 × 92 =
30. 30.107 × 113 =
31. 31.101 × 106 =
32. 32.108 × 97 =
33. 33.11 × 6 =
34. 34.86 × 97 =
35. 35.8 × 6 =
36. 36.9 × 9 =
37. 37.13 × 7 =
38. 38.12 × 7 =
39. 39.95 × 89 =
40. 40.107 × 103 =

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