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### Course: Grade 6 (VA SOL)>Unit 2

Lesson 4: Applying adding & subtracting integers

# Negative number word problem: temperatures

Use a number line to solve a word problem that includes a negative number. Created by Sal Khan.

## Want to join the conversation?

• At Sal mentioned the absolute value. What is the absolute value?
• The absolute value is the distance a certain number is from 0. For example, the absolute value of 5 is 5, because it is 5 units away from zero. The | | symbols represent absolute value, so if you have something like |-9|, you find the absolute value of -9, which is nine.
• math is.... interesting..
• math makes me want to cry
• It's been a long time since anyone has asked a question
• Save me someone
• why do we need the vertical number line thought?
• This is because this problem is about temperature. Sal made the number line to resemble a thermometer.
• At Sal mentioned the absolute value. What is the absolute value?
• The absolute value of a number, denoted by a pair of vertical bars, is its non-negative distance from 0 on the number line. This means we leave the number as is if the number is non-negative, but we remove the negative sign if the number is negative. For example:

|0| = absolute value of 0 = 0.
|5| = absolute value of 5 = 5.
|3.2| = absolute value of 3.2 = 3.2.
|2/3| = absolute value of 2/3 = 2/3.
|-5| = absolute value of -5 = 5.
|-3.2| = absolute value of -3.2 = 3.2.
|-2/3| = absolute value of -2/3 = 2/3.

Have a blessed, wonderful day!