Revising Arithmetic Operations

As you complete this course, you'll encounter several expressions like $4 + 3 + 6 + 7$ .

Let's go over some techniques so that you can make short work of these.

Adding two numbers is the simplest problem on the platform.
Adding three numbers is an extension on this, which shows how we can nest one type of problem inside another.
Adding four numbers is yet a further extension, showing that this process has no bounds
Subtracting two numbers is an independent problem, but which falls under the same topic.

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