Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 44 · 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. 1.86 × 86 =
2. 2.96 × 97 =
3. 3.87 × 88 =
4. 4.97 × 94 =
5. 5.1026 × 1024 =
6. 6.12 × 12 =
7. 7.7 × 7 =
8. 8.988 × 971 =
9. 9.98 × 99 =
10. 10.110 × 97 =
11. 11.13 × 11 =
12. 12.7 × 9 =
13. 13.11 × 14 =
14. 14.103 × 98 =
15. 15.13 × 11 =
16. 16.112 × 108 =
17. 17.1024 × 1013 =
18. 18.8 × 7 =
19. 19.87 × 91 =
20. 20.8 × 6 =
21. 21.14 × 11 =
22. 22.90 × 85 =
23. 23.1035 × 1012 =
24. 24.114 × 101 =
25. 25.91 × 96 =
26. 26.9 × 7 =
27. 27.6 × 9 =
28. 28.109 × 106 =
29. 29.101 × 97 =
30. 30.113 × 85 =
31. 31.109 × 91 =
32. 32.11 × 8 =
33. 33.104 × 87 =
34. 34.111 × 97 =
35. 35.108 × 93 =
36. 36.103 × 104 =
37. 37.90 × 96 =
38. 38.103 × 98 =
39. 39.12 × 13 =
40. 40.1033 × 1027 =

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