If the temperature at 7am was -7 Celicas degrees and the temperature rose 8 Celicas degrees during the morning, what was the temperature by noon. Use a number line to illustrate your answer?

1 Answer
CountryGirl
Apr 8, 2018

#1# Celsius.

Explanation:

Let's use a number line and start at #-7# Celsius. enter image source here

Now since the temperature rose by 8, we know that it is going to move to the right towards the positive numbers. It is always the same on a number line:

#"moving right = increase"#
#"moving left = decrease"#

Put your finger on the #-7# and move #8# spaces to the #"right"#.

enter image source here

You should be on the #1#.
enter image source here

So the temperature is now #1# Celsius.

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