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Home > CC1 > Chapter 4 > Lesson 4.1.2 > Problem 4-20


Each expression below begins with and then adds something to it. As you look at each expression, state which direction you should move on a number line if you start at . Then simplify each expression.

For example, if the expression reads , you would write “left, ,” since from you would move left on a number line units and would end up at .  


    See the diagram below.


    See the hint for part (a).

    Left, .


    Which direction should you move to add

A number line scaled in ones from negative 10 to 2. Movement from negative 5 to negative 9.5.