Chapter 5 - Fractions

19 terms

prime number

only factors are 1 and itself

composite number

has factors other than 1 and itself (not prime)

denominator

bottom number of a fraction / tells how many total equal parts there are

numerator

top number of a fraction / tells how many equal parts we have of the total

equivalent fractions

fractions that have different numerators and denominators but represent the same amount

factor

numbers we multiply together to get another number. ex. 5x3=15, 5 and 3 are factors of 15

multiples

ex. multiples of 5 are 5,10,15, 20, 25 etc. When a number is multiplied by a whole number

simplest form

a fraction that is reduced to the smallest digits possible in the numerator and denominator / they have no common factor other than 1

GCF

Greatest Common Factor - the number that is the largest and in common between given numbers. Used to simplify fractions.

improper fraction

a fraction that has a larger numerator than denominator (therefore is larger than 1)

mixed number

a number that has a whole number and a fraction

fraction

using a numerator and denominator with a bar in between - represents something that is less than a whole

divisible

a number is divisible by a number if it can go into it evenly

prime factorization

breaking a number down into all prime number factors

least common multiple

the smallest of the common multiples of 2 or more numbers

least common denominator

the smallest of the common multiples of the denominators

proper fraction

a fraction where the numerator is smaller than the denominator - represents a part of a whole

repeating decimal

when one or more digits repeats forever - can be written with a bar over the repeating digits

terminating decimal

a decimal that has a final digit (not repeating)