Joining or Separating

Liam had 236 toy cars. His friend gave him 128 more. How many toy cars does Liam have now?

A library had 457 books. They bought 289 more books. How many books do they have in total?

A baker made 125 muffins in the morning and 312 muffins in the afternoon. How many muffins did the baker make altogether?

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