Roberto delivers 252 newspapers each morning. This morning, he has already delivered 197. He subtracts to find that he has 55 left to deliver today.

Which equations can he use to verify his calculation? Check all that apply.

A. 197 + 55 = 252
B. 197 – 55 = 142
C. 252 – 55 = 197
D. 252 + 197 = 449
E. 55 + 55 = 110