Trent walked 4 blocks from his house to the bus stop. He rode the bus 7 blocks to the library. Later, he came home the same way. How many blocks did Trent travel in all? Let's answer step by step:
On the way to the library, Trent went 4 blocks + 7 blocks = 11 blocks. Trent came home the same way so he went 11 blocks + 11 blocks = 22 blocks. The answer: 22.