Basic Fraction Review Reading and Writing Fractions n

Basic Fraction Review

Reading and Writing Fractions n n A fraction is a number that stands for part of something. The numerator tells how many of those equal parts the fraction stands for. It is expressed in two parts. The denominator tells how many parts are in the whole. 3 4

Example 1 n What fraction of the pizza remains? The numerator tells how many of those equal parts the fraction stands for. The denominator tells how many parts are in the whole. 3 8

Example 2 n What fraction of the pencils are small? The numerator tells how many of those equal parts the fraction stands for. The denominator tells how many parts are in the whole. 4 7

Representing Fractions 1. Circle Fraction: 1 4 1. Draw a basic shape. 2. Divide the shape into 4 equal parts. 3. Shade 1 of the parts.

Representing Fractions 2. Rectangle Fraction: 1 4

Representing Fractions 3. Rectangle Fraction: 1 4

Representing Fractions 4. Rectangle Fraction: 1 4 Can you create a different representation of the fraction ¼?

Equivalent Fractions n Equivalent fractions are fractions that have the same value. 1 2 X 2 = X 2 2 4 X 2 = X 2 4 8 = ?

Equivalent Fractions ● Multiply or divide the numerator by the same number. 1 2 2 = 4 X 2 X 2 = X 2 4 8 = 8 X 2 16

Simplifying Fractions n A fraction is in simplest form when its numerator and denominator have no common factors other than 1. A student survey shows that 6 out of 18 children in the class said that they would go to a theme park over the summer break.

Simplifying Fractions Step 1 Divide the numerator and the denominator by a common factor. 3 is a common factor of 6 and 18 Step 2 Keep dividing by common factors until the only common factor is one. 2 is a common factor of 2 and 6 6 18 = 6÷ 3 18 ÷ 3 = 2 6 2 1 2÷ 2 = = 6÷ 2 6 3 Adapted from Math To Know by Mary C. Cavanagh