Common Denominator
Find a common denominator for:
1/2 and 2/3
6, 12, 18...
Add:
2/9 + 4/9
6/9
Subtract:
4/7 - 1/7
3/7
Multiply:
2/3 x 1/2
2/6
Ms. Reynolds has 5 pounds of clay for her art club. If she divides the clay into 1/3-pound pieces, how many pieces will she have?
15
Find a common denominator for:
3/5 and 1/3
15, 30...
Add:
1/3 + 2/9
5/9
Subtract:
3/5 - 1/3
4/15
Multiply:
4/5 x 2/6
8/30
Amber has a piece of ribbon that is 1/4-yard long. She wants to share the ribbon with 2 friends. If each of the 3 friends get the same amount, how much of the ribbon will each friend get?
1/12
Find a common denominator for:
2/7 and 1/6
42...
Add:
1/2 + 3/4
5/4
Subtract:
2/5 - 1/4
3/20
Multiply:
7/9 x 4/8
28/72
Davis has a box that is 5 inches wide. He wants to use the box to store markers that are 1/2-inch wide. If he lines the markers up side by side and uses the entire width of the box, how many markers can Davis fit into the box?
10
Find a common denominator for:
1/9 and 4/6
54...
Mary ran 1/3 of a mile on Monday. She ran 3/5 of a mile on Tuesday. How much did she run all together?
14/15
Bob had 11/12 of a pizza. He ate 1/6 of it. How much pizza does he have left?
9/12
Multiply:
1/5 of 45
45/5 or 9
Judy is baking banana nut bread. The recipe calls for 1/3 cup of walnuts. Judy mixes the batter and pours it into 4 small bread tins. how many cups of walnuts will be in each tin?
1/12
Find a common denominator for:
1/10 and 3/4
20, 40...
Frank ate 2/7 of a cake for dessert. Toby at 2/5 of the cake. How much cake did they eat in all?
24/35
Marissa had 15/20 yard of string. She used 2/5 yard for a project. How much string does she have left?
7/20 yard
Multiply:
3/5 of 15
45/5 or 9
Hank has 1/2 gallon of milk. He wants to pour it into 4 smaller containers, putting the same amount in each container. How much milk should he put in each container?
1/8