Add and Subtract Like Fractions
+/- Like Fractions
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