Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 267 · 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. 1.90 × 86 =
2. 2.7 × 7 =
3. 3.99 × 94 =
4. 4.101 × 105 =
5. 5.103 × 97 =
6. 6.1013 × 1028 =
7. 7.11 × 8 =
8. 8.97 × 90 =
9. 9.105 × 98 =
10. 10.92 × 96 =
11. 11.104 × 103 =
12. 12.104 × 104 =
13. 13.105 × 103 =
14. 14.6 × 8 =
15. 15.105 × 109 =
16. 16.85 × 90 =
17. 17.106 × 102 =
18. 18.103 × 92 =
19. 19.1001 × 1016 =
20. 20.97 × 91 =
21. 21.99 × 86 =
22. 22.98 × 97 =
23. 23.105 × 87 =
24. 24.99 × 96 =
25. 25.97 × 87 =
26. 26.13 × 11 =
27. 27.6 × 9 =
28. 28.90 × 96 =
29. 29.7 × 7 =
30. 30.111 × 103 =
31. 31.14 × 14 =
32. 32.6 × 8 =
33. 33.86 × 94 =
34. 34.104 × 87 =
35. 35.108 × 114 =
36. 36.1018 × 1026 =
37. 37.104 × 106 =
38. 38.99 × 96 =
39. 39.964 × 972 =
40. 40.9 × 8 =

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