Micah is making a cinnamon and sugar mixture to sprinkle on toast. His recipe uses 18 cup of cinnamon and 12 cup of sugar. Find 18+12 and interpret this sum in the context of the problem.

The sum of 18+12 is 30. In the context of the problem, this sum represents the total amount of cinnamon and sugar mixture that Micah is making.

To find the sum of 18 and 12, simply add the two numbers together:

18 + 12 = 30

In the context of the problem, this sum represents the total amount of the cinnamon and sugar mixture that Micah's recipe uses.