Question

Keisha makes a large sandwich for a family picnic. She takes 1/2 of the sandwich to the picnic.At the picnic, her family eats 3/8 of the whole sandwich. What fraction of the whole sandwich does Keisha bring back from the picnic?

Answer 1

1/2 - 3/8 = 4/8 - 3/8 = 1/8
you have to find a common denominator before you can subtract. in this case it is 8