Transcript student 1
My pieorific book Student 1 What are fractions • Part of whole. • 3/4 What is a numerator and denominator A numerator is the top number of a fraction , the part. A denominator is the bottom number in a fraction, how many parts there are. numerator denominator What is a common denominator • A common denominator is when the two denominators are the same. ¾ and ¼ 4 is the common denominators. What an improper fraction is • An improper fraction is when the numerator is larger then the denominator. • 14/6 What a mixed number is • A mixed number is fraction that is more then a whole. • Examples: 1 5/6, 3 1/2 What is a Ratio • Two numbers that are normally expressed as the quotient of one divided by the other. • The ratio to 6 to 10 6:10 or 6/10 What reciprocal is • Reciprocal is when you turn the divisor up side down. • Example: The reciprocal of 2/3 is 3/2 How you find Equivalent fractions • The best way to think about equivalent fractions is that they are fractions that have the same value. Equivalent fractions represent the same part of a whole. For example, if we cut a pie exactly down the middle, into two equally sized pieces, one piece is the same as one half of the pie. And if another pie (the same size) is cut into 4 equal pieces, then two pieces of that pie represent the same amount of pie that 1/2 did. So we can say that 1/2 is are equivalent (or equal) to 2/4. Adding fractions • ADDING FRACTIONS • 1. FIND COMMON DENOMINATOR • 2. Add the numerators • 3. Add the whole numbers • 4. Reduce to lowest terms Subtracting fractions • 1. Find the common denominator • 2.Subtract the numerators • 3.Subtract the whole numbers • 4. Reduce to lowest terms Multiplying fractions • 1. Multiply the numerators • 2. Multiply the denominators • 3. Reduce to lowest terms Dividing fractions • 1.Both the dividend and the divisor have to be fractions • 2. change the mixed numbers to improper fractions and change whole numbers to improper fractions • 3.Multiply the reciprocal by the divisor • 4.Reduce to lowest termst conclusion • 1.In recipes • 2.ordering meet