Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 243 · 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. 1.6 × 9 =
2. 2.109 × 105 =
3. 3.7 × 8 =
4. 4.103 × 113 =
5. 5.108 × 96 =
6. 6.112 × 94 =
7. 7.94 × 86 =
8. 8.86 × 98 =
9. 9.14 × 7 =
10. 10.110 × 99 =
11. 11.1029 × 1034 =
12. 12.13 × 14 =
13. 13.109 × 94 =
14. 14.85 × 90 =
15. 15.111 × 104 =
16. 16.108 × 92 =
17. 17.104 × 98 =
18. 18.985 × 963 =
19. 19.86 × 90 =
20. 20.7 × 7 =
21. 21.1029 × 1006 =
22. 22.11 × 13 =
23. 23.7 × 7 =
24. 24.102 × 109 =
25. 25.1018 × 1008 =
26. 26.95 × 94 =
27. 27.6 × 7 =
28. 28.980 × 972 =
29. 29.101 × 98 =
30. 30.981 × 996 =
31. 31.9 × 9 =
32. 32.984 × 971 =
33. 33.110 × 96 =
34. 34.91 × 97 =
35. 35.102 × 115 =
36. 36.92 × 89 =
37. 37.997 × 997 =
38. 38.111 × 115 =
39. 39.1025 × 1013 =
40. 40.103 × 111 =

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