Add/Subtract Fractions
5/12 + 3/12 =
8/12
5 1/3 - 3 4/6 =
4/6
John read for 1/3 of an hour. Jimmy read for 3/4 of an hour more than John. How many hours did they read in all?
1 5/12 hours
Jimmy has 7 red marbles and 14 blue marbles in a bag. What is the probability of him reaching in and choosing a blue marble?
14 out of 21 or 14/21 or 2/3
Order the fractions from least to greatest:
6/12, 1/3, 1 1/4, 1.5, 2/3
1/3, 6/12, 2/3, 1 1/4, 1.5
6/9 - 1/3 =
3/9
6 7/12 - 2 1/4 =
4 4/12
1 1/6 hours
Kate has 8 blue marbles and 8 yellow marbles in a bag. What is the probability of her reaching in and pulling out a blue marble?
8 out of 16 or 8/16 or 1/2
5/8 or 5/9?
How do you know? Be prepared to explain your answer to Mr. B.
5/8
3/4 - 2/3 =
1/12
1 2/3 + 4 1/9
5 7/9
Devon read for 4/5 of an hour. Dontae read for 2/3 of an hour more than Devon. How many hours did they read altogether?
2 4/15 hours
Louie has 9 red marbles and 27 black marbles. What is the probability of him reaching in and pulling out a red marble?
9 out of 36 or 9/36 or 1/4
Order the fractions from greatest to least:
1/2, 2.07, 9/6, 4/5, 12/4
12/4, 2.07, 9/6, 4/5, 1/2
2/7 + 1/3 =
13/21
4 2/7 + 5 5/14 =
9 9/14
2/6 + 1/4 =
7/12
7 2/6 - 1 1/2 =
5 5/6