If deontae walks to and from school each day and his school is 1 1/4 miles from his house, how many miles does he walk in a school week?

First multiply 1 1/4 by 2 because he walks there and back each day. 
1.25 * 2 = 2 1/2 mi each day

Then multiply 2 1/2 by 5 because he walks to school and back 5 times. 
2.5 * 5 = 12 1/2 

So he walks 12 1/2 miles each school week

× 2
 × = = 

 × 5
 × =  = 

The answer would be 484