Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 669 · 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. 1.1026 × 1026 =
2. 2.101 × 103 =
3. 3.85 × 85 =
4. 4.986 × 969 =
5. 5.86 × 93 =
6. 6.980 × 965 =
7. 7.105 × 109 =
8. 8.103 × 85 =
9. 9.11 × 11 =
10. 10.106 × 105 =
11. 11.1021 × 1018 =
12. 12.103 × 105 =
13. 13.13 × 12 =
14. 14.7 × 8 =
15. 15.97 × 96 =
16. 16.110 × 106 =
17. 17.103 × 109 =
18. 18.112 × 96 =
19. 19.9 × 8 =
20. 20.997 × 997 =
21. 21.14 × 11 =
22. 22.986 × 962 =
23. 23.7 × 9 =
24. 24.102 × 109 =
25. 25.85 × 98 =
26. 26.113 × 102 =
27. 27.109 × 105 =
28. 28.115 × 90 =
29. 29.88 × 94 =
30. 30.1031 × 966 =
31. 31.97 × 97 =
32. 32.1025 × 1020 =
33. 33.14 × 13 =
34. 34.99 × 86 =
35. 35.91 × 92 =
36. 36.9 × 9 =
37. 37.14 × 11 =
38. 38.1040 × 1033 =
39. 39.105 × 94 =
40. 40.11 × 14 =

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