Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 378 · 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. 1.1029 × 1039 =
2. 2.13 × 11 =
3. 3.13 × 9 =
4. 4.9 × 7 =
5. 5.1024 × 1035 =
6. 6.108 × 99 =
7. 7.985 × 992 =
8. 8.104 × 89 =
9. 9.89 × 94 =
10. 10.106 × 93 =
11. 11.107 × 87 =
12. 12.92 × 91 =
13. 13.112 × 87 =
14. 14.6 × 6 =
15. 15.112 × 113 =
16. 16.13 × 6 =
17. 17.101 × 96 =
18. 18.102 × 112 =
19. 19.91 × 99 =
20. 20.112 × 102 =
21. 21.110 × 89 =
22. 22.14 × 6 =
23. 23.103 × 89 =
24. 24.12 × 9 =
25. 25.1017 × 977 =
26. 26.104 × 93 =
27. 27.92 × 85 =
28. 28.115 × 109 =
29. 29.109 × 102 =
30. 30.92 × 85 =
31. 31.997 × 967 =
32. 32.102 × 96 =
33. 33.107 × 106 =
34. 34.89 × 96 =
35. 35.101 × 112 =
36. 36.97 × 98 =
37. 37.1017 × 1039 =
38. 38.112 × 102 =
39. 39.11 × 9 =
40. 40.108 × 111 =

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