each rabbit costume needs one and one half yards of white fur fabric,a yard of blue striped fabric,and a quarter of a yard of pink felt for the ears.

Sounds like a cute costume.

To find out how much fabric is needed for a certain number of rabbit costumes, you can follow these steps:

1. Calculate the total amount of white fur fabric needed per costume:
- Since each costume requires one and a half yards of white fur fabric, multiply 1.5 by the number of costumes you want to make.

2. Determine the total amount of blue striped fabric needed per costume:
- Each costume needs one yard of blue striped fabric, so multiply 1 by the number of costumes.

3. Calculate the total amount of pink felt needed per costume:
- Each costume requires a quarter of a yard of pink felt. Multiply 0.25 by the number of costumes.

4. Add up the amounts for each fabric type to get the total fabric needed:
- Sum up the results from steps 1, 2, and 3 to determine the total fabric required for the desired number of costumes.

Let's say you want to make 5 rabbit costumes. Plug the values into the steps above:

1. White fur fabric: 1.5 yards/costume x 5 costumes = 7.5 yards
2. Blue striped fabric: 1 yard/costume x 5 costumes = 5 yards
3. Pink felt: 0.25 yards/costume x 5 costumes = 1.25 yards

Therefore, for 5 rabbit costumes, you would need 7.5 yards of white fur fabric, 5 yards of blue striped fabric, and 1.25 yards of pink felt.