Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 426 · 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. 1.1005 × 1017 =
2. 2.92 × 96 =
3. 3.115 × 101 =
4. 4.93 × 85 =
5. 5.1004 × 1011 =
6. 6.966 × 991 =
7. 7.960 × 990 =
8. 8.104 × 113 =
9. 9.108 × 103 =
10. 10.7 × 9 =
11. 11.9 × 8 =
12. 12.9 × 7 =
13. 13.114 × 105 =
14. 14.14 × 6 =
15. 15.86 × 91 =
16. 16.111 × 88 =
17. 17.101 × 115 =
18. 18.11 × 11 =
19. 19.114 × 101 =
20. 20.114 × 105 =
21. 21.961 × 979 =
22. 22.6 × 7 =
23. 23.101 × 99 =
24. 24.112 × 105 =
25. 25.92 × 87 =
26. 26.6 × 9 =
27. 27.107 × 87 =
28. 28.91 × 95 =
29. 29.103 × 110 =
30. 30.970 × 984 =
31. 31.12 × 9 =
32. 32.97 × 97 =
33. 33.105 × 112 =
34. 34.93 × 91 =
35. 35.12 × 11 =
36. 36.108 × 114 =
37. 37.87 × 95 =
38. 38.92 × 91 =
39. 39.91 × 98 =
40. 40.105 × 102 =

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