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Fractions,Mixed Numbers,and Rational Expressions

Definitions:

•Fraction – A number that describes a part of a whole
•Numerator – The number written in the top position in a fraction
•Denominator – The number written in the bottom position in a fraction
Rational number – A number that can be ex pressed as a ratio of integers
•Simplify – Write an equivalent expression with fewer symbols or smaller numbers
Simplest form – An equivalent expression written with the fewest symbols and the smallest numbers possible
•Equivalent fractions – Fractions that name the same number
•Multiple – A number that is evenly divided by a given number
•Improper fraction – A fraction in which the absolute value of the numerator is greater than or equal to the absolute value of the denominator
•Mixed number – An integer combine with a fraction

Objective 1: Name the fraction represented by the shaded region

•Count the number of shaded items
o this number goes in the numerator

•Count the number of regions total (both shaded and unshaded)
o this number goes in the denominator

•Simplify


Objective 2:
Graph Fractions on a number line




Objective 3: Simplify fractions
• Any number divided by “1” is equal to itself


• “0” divided by any number is equal to “0”

• Any number divided by “0” is undefined


• Any number divided by itself is equal to “1”


Objective 4: Write equivalent fractions


Objective 5:
Use < or > to make a true statement
• To compare fractions , they must first have a common denominator


• If they don’t have the same denominator, make them equivalent fractions with the same denominator


Objective 6: Write improper fractions as mixed numbers

• To write an improper fraction as a mixed number
o Divide the denominator into the numerator
ϑThe answer is your integer
ϑThe remainder is your numerator
ϑThe original denominator is also your new denominator


Objective 7: Write mixed numbers as improper fractions

• To write a mixed number as an improper fraction
o Multiply the denominator by the integer
o Add the resulting product to the numerator
o This answer is your numerator in your new improper fraction
o Keep the same denominator

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