Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 59 · 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. 1.9 × 9 =
2. 2.9 × 9 =
3. 3.14 × 12 =
4. 4.1033 × 986 =
5. 5.101 × 104 =
6. 6.8 × 6 =
7. 7.96 × 98 =
8. 8.98 × 88 =
9. 9.1037 × 992 =
10. 10.93 × 99 =
11. 11.13 × 14 =
12. 12.975 × 978 =
13. 13.110 × 103 =
14. 14.1021 × 987 =
15. 15.107 × 101 =
16. 16.103 × 105 =
17. 17.11 × 12 =
18. 18.110 × 90 =
19. 19.1025 × 985 =
20. 20.110 × 108 =
21. 21.105 × 90 =
22. 22.8 × 6 =
23. 23.99 × 87 =
24. 24.115 × 115 =
25. 25.1035 × 1012 =
26. 26.89 × 85 =
27. 27.9 × 7 =
28. 28.112 × 115 =
29. 29.106 × 109 =
30. 30.98 × 90 =
31. 31.88 × 95 =
32. 32.12 × 11 =
33. 33.99 × 94 =
34. 34.1007 × 979 =
35. 35.95 × 97 =
36. 36.89 × 87 =
37. 37.108 × 87 =
38. 38.9 × 6 =
39. 39.91 × 97 =
40. 40.1026 × 1027 =

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