Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 376 · 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. 1.1034 × 1011 =
2. 2.115 × 86 =
3. 3.86 × 85 =
4. 4.107 × 115 =
5. 5.7 × 6 =
6. 6.104 × 107 =
7. 7.106 × 87 =
8. 8.9 × 6 =
9. 9.115 × 92 =
10. 10.97 × 91 =
11. 11.1027 × 1037 =
12. 12.996 × 962 =
13. 13.112 × 96 =
14. 14.96 × 85 =
15. 15.108 × 106 =
16. 16.115 × 104 =
17. 17.6 × 6 =
18. 18.108 × 104 =
19. 19.12 × 12 =
20. 20.11 × 13 =
21. 21.1028 × 989 =
22. 22.1032 × 1004 =
23. 23.973 × 991 =
24. 24.7 × 9 =
25. 25.109 × 108 =
26. 26.102 × 115 =
27. 27.115 × 112 =
28. 28.9 × 9 =
29. 29.93 × 90 =
30. 30.1004 × 963 =
31. 31.1032 × 1015 =
32. 32.113 × 113 =
33. 33.87 × 99 =
34. 34.99 × 98 =
35. 35.1004 × 962 =
36. 36.997 × 977 =
37. 37.96 × 97 =
38. 38.13 × 13 =
39. 39.98 × 96 =
40. 40.95 × 87 =

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