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.
197 + 55 = 252
197 – 55 = 142
252 – 55 = 197
252 + 197 = 449
55 + 55 = 110