I talk about log bar notations. Taking plenty of examples to explain how to add, subtract, divide and multiply characteristics and mantissa in a log bar notation. Timestamps 00:00 - Intro 00:10 - addition of logarithm bar notation 04:48 - Subtraction of log bar notations 09:23 - Multiplication of log bar notations 12:07 - division of log bar notations 15:04 - Outro