Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 186 · 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. 1.96 × 86 =
2. 2.109 × 115 =
3. 3.106 × 109 =
4. 4.110 × 107 =
5. 5.105 × 95 =
6. 6.8 × 8 =
7. 7.13 × 9 =
8. 8.114 × 96 =
9. 9.1039 × 1025 =
10. 10.9 × 8 =
11. 11.94 × 87 =
12. 12.1010 × 1026 =
13. 13.980 × 987 =
14. 14.113 × 96 =
15. 15.101 × 110 =
16. 16.7 × 9 =
17. 17.11 × 9 =
18. 18.970 × 993 =
19. 19.8 × 8 =
20. 20.6 × 8 =
21. 21.88 × 99 =
22. 22.8 × 9 =
23. 23.89 × 99 =
24. 24.966 × 972 =
25. 25.91 × 92 =
26. 26.93 × 93 =
27. 27.13 × 9 =
28. 28.14 × 13 =
29. 29.1002 × 1023 =
30. 30.102 × 90 =
31. 31.101 × 99 =
32. 32.1021 × 1031 =
33. 33.113 × 103 =
34. 34.6 × 7 =
35. 35.114 × 105 =
36. 36.8 × 7 =
37. 37.115 × 103 =
38. 38.7 × 6 =
39. 39.104 × 115 =
40. 40.11 × 12 =

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