View and Download the solved questions, solved numerical problems or 9th Class Mathematics notes of Chapter 3 “Logarithms” of Punjab Textbook Board. These 9th class Mathematics notes of 3rd Chapter are according to the new syllabus (2019) of Punjab Boards including Lahore Board, Gujranwala Board, Sahiwal Board, Rawalpindi Board, Faisalabad Board, Multan Board, Bahawalpur Board, Federal Board, DG Khan Board and Sargodha Board. Students of 9th Class of all these board can facilitate from the Mathematics notes given below. You can also download 9th Class Mathematics Chapter 3 Solved Questions and Numericals Problems.

### Unit 3: Logarithms

These are clearly written notes about chapter 3 Questions/Problems. So first Chapter 3 is all about Logarithms.

*In this chapter we will learn about expressing numbers in Standard Scientific Notation and vice versa.*

Define a common logarithm, *characteristic and mantissa of log of number. Using Tables to find log of numbers. Concept of Anti-log and using tables to find anti log of number.Laws of Logarithms and differentiate of common and natural logarithms.*

Proving basic laws (Addition, Subtraction, Multiplication, Division) of Logarithms.

Define a common logarithm,

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