Four-Figure Logarithm Table

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Interactive Logarithm Finder

Base 10 (Common)

log₁₀

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Deconstructed Solution

Log Value: 1.3701

Characteristic Scale

1 (2 - 1 = 1)

10¹ ≤ N < 10²

Mantissa (.m) Table

.3701 (3692 + 9)

Row 23 • Col 4 • Diff 5

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Look at Row 23, follow horizontally to Column 4 to get 3692. Add Mean Difference in Column 5 (+9) = 3701. Characteristic is 1, yielding 1.3701.

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Selected: Row 23, Col 4 = 3692 (+9)

No.	Main Mantissa Columns										Mean Differences
No.	0	1	2	3	4	5	6	7	8	9	1	2	3	4	5	6	7	8	9