What Are Fractions?

An integer is a POSITIVE or NEGATIVE whole number Examples: 1, 5, 8, 25, 90, -3, -56, -234 Non-Examples: .5, ½, 100.25, -3/4

What is a Fraction? A fraction is a part of a whole like a piece of a whole pizza or a whole pie A fraction is also a part of a set like in a dozen cupcakes

Equal Parts not equal parts equal parts To have a fraction, you must have equal parts not equal parts equal parts

What does a fraction look like? 1 4 numerator denominator

Numerator and Denominator Numerator – The number on top that tells how many equal parts are described in the fraction. Denominator – The quantity below the line in a fraction. It tells the number of equal parts into which the whole is divided.

How Do We Read Fractions? 2 1 6 1 one half one sixth 3 1 8 1 one third one eighth 4 1 10 1 one fourth one tenth

Parts of a Set Example - We made 6 cookies. 1 is peanut butter and 5 are chocolate chip. How would you write the number of peanut butter cookies as a fraction. 1 the number of peanut butter cookies 6 the total number of cookies

1 2 Parts of a Set What fraction of the triangles are red? red triangles 2 total number triangles

1 4 Parts of a Set What fraction of the boxes are orange? orange boxes total number boxes

4 10 Parts of a Set What fraction of the stars are yellow? yellow stars 10 total number stars

Parts of a Whole Example – I ordered one whole pizza. It was cut into 8 slices. I ate 2 slices. What fraction of the whole pizza did I eat? 2 the number of slices I ate 8 the total number of pizza slices

Parts of a Whole What is the fraction of the colored part of each picture below? 3 1 8 1 2 1 6 1 4 1

Parts of a Whole What is the fraction of the blue part of the picture below? 1 3 2 4 4

Parts of a Whole What is the fraction of the colored part of each picture below? 6 4 2 3 2 8 7 4 3

Proper Fraction A Proper Fraction has a top number (numerator) less than its bottom number (denominator) Example: 3 2 8 7

Improper Fraction Fraction in which the numerator is bigger than the denominator. You must DIVIDE to make it into a mixed number. EX: 25 4

Number that contains a whole number and a fraction. Mixed Number Number that contains a whole number and a fraction. Ex: 3 ½

Greatest Common Facter Also known as GCF The largest number that divides evenly into two or more numbers. Used when simplifying fractions

Least Common Multiple The least common multiple of the denominators of two or more fractions. Ex: 4/8 and 5/6 Multiples of 8: 8, 16, 24, 32, 40, 48, 56 Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48

PowerPoint a combination of: http://www.teacherspayteachers.com/Product/Intro-to-Fractions-PowerPoint-Lesson-506079 And - Mrs. Draper