Add and Subtract Like Fractions

+/- Like Fractions

Adding and Subtracting Fractions with Like Denominators
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Vocabulary

fraction

part of a whole


numerator

top number in a fraction-tells how many equal parts are being used


denominator

bottom number in a fraction-tells the number of equal parts the top number is divided by


division

Fractions represent division


improper fraction

this fraction has a numerator greater than or equal to its denominator


mixed number

a whole number and a fraction


benchmark fractions

include the fractions 1/4, 1/3, 1/2, 2/3, and 3/4


unit fraction

a fraction whose numerator is always 1


equivalent fractions

fractions that name the same amount


common factor

of two numbers are factors that are the same that are called these


greatest common factor (GCF)

the greatest number that is a factor of both


simplest form

the numerator and denominator have no common factor other than 1


common denominator

denominators are the same


lowest terms

simplest form


multiples

5,10,15,20 or 3,6,9,12 or, 2,4,6,8,10... What do you notice?


least common multiple (LCM)

the least number that is a multiple of both numbers


least common denominator (LCD)

the least common multiple of the denominators


simplify

reduce or bring the fraction to lowest terms; simplest form

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