The sum of $12 + 5$ is:

$12 + 5 = 17$

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Here are 5 related questions to practice:

1. What is $15 + 8$?
2. If you add $25$ and $10$, what is the result?
3. What is the sum of $7 + 13$?
4. How much is $30 + 20$?
5. What is $50 + 25$?

Tip: When adding, you can break numbers down into tens and ones to simplify the process.