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. 252 minus 197 = 55. 2 in the hundreds column is crossed out and 1 is above it. 5 in the tens column is crossed out and 14 is above it. 2 in the ones column is crossed out and 12 is above it.

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