2 Fraction VocabularyFraction - a number that stands for part of something.Denominator – the number on the bottom of a fraction; it tells how many equal parts are in the whole.Numerator – the number on the top of a fraction; tells how many of the parts you are talking about
3 Fractions that name the same number or amount. Equivalent FractionsFractions that name the same number or amount.3 = 6To find equivalent fractions, you can multiply or divide the numerator & the denominator by the same number.
4 Simplest FormA fraction that has 1 as the greatest common factor of the numerator and denominator. The numerator and denominator are as low as they can go.To simplify 12 you THINK:18What are the factors of 12 & 18?12 – 1, 2, 3, 4, 6, = 1, 2, 3, 6, 9,18What is the GCF? 63. Divide the numerator and denominator by the GCF.12 ÷ 6 = 218 ÷ 6 = 3SO the simplest form is 23
5 Improper Fraction Mixed Number Fraction in which the numerator is bigger than the denominator. You must DIVIDE to make it into a mixed number.EX: 254Mixed NumberA number that includes a whole number and a fraction beside it.Ex: 2 3/5
7 To convert from a mixed number to an improper fraction:
8 Comparing Fractions Fractions with like denominators: Just compare the numerators.Ex:7 is greater than 5 so that fraction is bigger
9 Comparing Fractions with Unlike Denominators Step 1:Find the least common multiple (LCM) of the denominators.EX: denominators - 2 and 32 – 2, 4, 6, 8, 10 ,123 – 3, 6, 9, 12, 15, 18So – the LCM is 6.
10 Step 2: Use the LCM as the new denominator for both fractions Step 2: Use the LCM as the new denominator for both fractions. Step 3: Find the numerators of the new fractions. Step 4: Compare the new numerators.
11 Ordering FractionsIf they do have the same denominator already, you just put them in order according to the numerators.If they do not have the same denominator – you have to use the LCM to make new equivalent fractions with the same denominator, then put them in order.