Introduction To Percentages

Tutoring on Introduction To Percentages

Learning Objectives:

Understand Introduction to Percentage.

Math Tutoring on Introduction to Percentages

In mathematics, a Percentage is a way of expressing a number as a fraction of 100 (Per Cent meaning “Per Hundred”). It is often denoted using Percent Sign, %.

For example, if there is a 20% chance of rain tomorrow, that means there are 20 chances out of 100.

We can write three kinds of notation for Percentages: Percent, Fraction, and Decimal.

Converting Percent (p %) to Fraction:

    Write ‘p’ over 100.

    Simplify.

Converting Percent to Decimal:

    Drop the %.

    Multiply by 0.01 or divide by 100. This is equivalent to dropping the % and moving the decimal to the left two places.

Converting Decimal to Percent:

    Multiply by 100.

    Add %.

Converting Fraction to Percent:

    Divide the numerator by the denominator.

    Multiply by 100.

    Add %.

 

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Hook Questions:

1.    What is the meaning of Percentage?

2.    How do you convert Percent into Decimal and Fraction?

 

 

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