Adding
What must we ALWAYS have before we can add fractions?
common denominators
5/7 - 1/3 =
8/21
2/5 x 4 =
1 3/5
5 / 2/3 =
7 1/2
What is 43/7 as a mixed number?
6 1/7
1/3 + 1/4 =
7/12
7/3 - 1/5 =
2 2/15
What are the 3 steps to multiplying fractions (take into consideration that we have already converted any mixed numbers into improper fractions)?
1. multiply the numerators
2. multiply the denominators
3. reduce
What are the 3 steps to dividing fractions?
1. keep the first fraction
2. change the division sign to multiplication
3. flip the second fraction
Define an improper fraction.
2/3 + 5/7 =
1 8/21
5 1/3 - 9/4 =
3 1/12
3/7 x 5/4 =
15/28
3/4 / 6/5 =
5/8
What is a fraction?
a rational number
7/5 + 6/4 =
2 9/10
4 2/3 - 1 1/6 =
3 1/2
2 2/5 x 3 3/4 =
9
3 4/5 / 2 1/3 =
1 22/35
Yes
2 1/3 + 3 1/2 =
5 5/6
Hailemichael had a roll of ribbon that was 3 1/4 m long. He cut off 2 1/3 m. How much ribbon was left on the roll?
11/12 m
Trey needs 1 1/3 cups of butter for a batch of cookies. If he made 8 batches of cookies, how much butter does he need?
10 2/3 cups of butter
Jared has a piece of wood that is 3/4 of a foot in length. He needs to cut pieces that are 1/16 of a foot long. How many pieces can Jared cut?
12 pieces
When we are flipping a fraction, what are we really doing? What is another name for that?
taking the reciprocal