Mental Calculation of Logarithms

Here are some resources on mentally calculating logarithms.

• Mentally calculating logarithms
• How to calculate antilogarithm mentally
• Calculating logarithms by hand
• Calculating logarithms
• Speed calculators: What is really useful to memorize?
• Calculating logarithms by hand
• Calculating logarithms
• The ultimate guide to Logarithm

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• The 13th root of a 100 digit number, part 1
• The 13th root of a 100 digit number, part 2