Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 719 · 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. 1.974 × 986 =
2. 2.12 × 12 =
3. 3.110 × 109 =
4. 4.108 × 115 =
5. 5.11 × 6 =
6. 6.12 × 12 =
7. 7.9 × 7 =
8. 8.94 × 98 =
9. 9.85 × 95 =
10. 10.9 × 7 =
11. 11.92 × 94 =
12. 12.12 × 8 =
13. 13.1003 × 1002 =
14. 14.9 × 9 =
15. 15.102 × 97 =
16. 16.105 × 96 =
17. 17.109 × 107 =
18. 18.6 × 9 =
19. 19.93 × 99 =
20. 20.110 × 93 =
21. 21.92 × 98 =
22. 22.1004 × 1032 =
23. 23.93 × 92 =
24. 24.89 × 91 =
25. 25.9 × 7 =
26. 26.101 × 108 =
27. 27.105 × 105 =
28. 28.8 × 6 =
29. 29.6 × 9 =
30. 30.7 × 8 =
31. 31.1009 × 984 =
32. 32.8 × 9 =
33. 33.103 × 102 =
34. 34.112 × 109 =
35. 35.110 × 104 =
36. 36.91 × 87 =
37. 37.9 × 6 =
38. 38.106 × 105 =
39. 39.11 × 11 =
40. 40.1024 × 1009 =

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