Which question is a missing-addend problem?

Question

A.

On​ Elizabeth's three mile walk to the​ park, she came across a sign that said she had one mile left to reach the park. How far has Elizabeth walked so​ far?

B.

Matthew ate 15 jelly beans and Martha ate 10 jelly beans. How many more jelly beans did Matthew eat than​ Martha?

C.

Barbara has a coupon book for 15 pizzas. If she used four coupons to buy pizza for​ Friday's party, how many coupons does she have​ left?

D.

Robert saved​ $65 toward the​ $100 iPod he wants to buy. How much money does he have to add to his savings to purchase the​ iPod?

Answer 1

Question D is a missing addend problem.