jill is making a long cape. she needs 4 1/3 yards of blue fabric for the outside of the cape. She needs 3 2/3 of purple fabric for the lining of the cape
Part A jill incorrectly subtracted the two mixed numbers to find how much more blue fabric than purple fabric she should buy. Her work is shown below.
4 1/3- 3 2/3= 12/3- 9/3=3/3
Why is jill's work incorrect?
Part B
how much more blue fabric than purple fabric should jill buy? show your work