Fractions & Mixed Numbers (Adding & Subtracting)

Intro to Fractions Remember fractions are parts of a whole

#10 Adding & Subtracting Fractions with like & unlike denominators How do you add fractions with like (same denominators? Keep the denominator and add the numerators together Remember to reduce fractions to lowest terms Example:

#10 Adding & Subtracting Fractions with like & unlike denominators How do you add fractions with unlike (different) denominators First you must find a common denominator Either multiply both denominators and reduce or find the lowest common denominator (LCD) Then, add numerators across & keep the common denominator Example

#10 Adding & Subtracting Fractions with like & unlike denominators What is an improper fraction? When the numerator is larger than the denominator Example:

#10 Adding & Subtracting Fractions with like & unlike denominators How do you add mixed numbers? Change mixed number into improper fraction (see prior slide) Get your common denominator Add numerators across & keep denominator Example:

#10 Adding & Subtracting Fractions with like & unlike denominators How do you subtract fractions with like denominators? Subtract numerators and keep denominator Example

#10 Adding & Subtracting Fractions with like & unlike denominators How do you subtract fractions with unlike denominators First you must find a common denominator Either multiply both denominators and reduce or find the lowest common denominator (LCD) Then, subtract numerators across & keep the common denominator Example

#10 Adding & Subtracting Fractions with like & unlike denominators How do you subtract mixed numbers? Change mixed number into improper fraction (see prior slide) Get your common denominator Subtract numerators and keep denominator Example: