Find the LOWEST Common Denominator
Find the lowest common denominator for 1/4 and 1/2.
4
Find the equivalent fraction for 1/2 = ?/4.
2/4
1/2 + 1/4 = _______
3/4
4/5 - 1/3 = _______
7/15
Miss Lee has 1 2/3 pizzas to eat. She ate 1/2 pizzas. How much pizza does she have left?
Miss Lee has 1 1/6 pizzas left.
Find the lowest common denominator for 1/2 and 1/3.
6
Find the equivalent fraction for 3/5 = ?/15.
9/15
1/2 + 1/3 = _______
5/6
2/9 - 1/6 = _______
1/18
Miss Lee is making a cake. The recipe needs 2 3/4 cups of flour, but she only has 1 1/6 cups. How many more cups does she need?
Miss Lee needs 1 7/12 cups more.
Find the lowest common denominator for 1/3 and 1/4.
12
Find the equivalent fraction for 2/6 = ?/18.
6/18
1/2 + 3/5 = _______
11/10 = 1 1/10
3/4 - 2/6 = _______
5/12
Billy Bob has 3 3/4 yards of blue fabric and 1 3/8 yards of purple fabric. How many yards does he have in all?
Billy Bob has 4 9/8 yards of fabric in all.
----- OR -----
Billy Bob has 5 1/8 yards of fabric in all.
Find the lowest common denominator for 1/6 and 1/4.
12
Find the equivalent fraction for 3/4 = 12/?.
12/16
1 3/4 + 1 1/3 = _______
2 13/12 = 3 1/12
2 9/16 - 1/4 = _______
2 5/16
Miss Smith brings 2 3/7 bags of Takis and 2 2/3 bags of Hot Cheetos to a class party. How many bags of chips did she bring in all?
Miss Smith brought 4 23/21 bags of chips in all.
----- OR -----
Miss Smith brought 5 2/21 bags of chips in all.
Find the lowest common denominator for 1/6 and 1/5.
30
Find the equivalent fraction for 12/20 = 3/?.
3/5
1 1/6 + 2 3/5 = _______
3 23/30
2 5/7 - 2 2/5 = _______
11/35
Mrs. Schottle made juice for our class. She used 2 2/4 gallons of orange juice and 3 1/3 gallons of pineapple juice. How many more gallons of pineapple juice than orange juice did Mrs. Schottle use?
Mrs. Schottle used 10/12 gallons more of pineapple juice than orange juice.
----- OR -----
Mrs. Schottle used 5/6 gallons more of pineapple juice than orange juice.