Absolute value
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Absolute Value. Plot the following points and its opposite number on the number line:. -7 5 6 -2 8 -4 . Vocabulary. Absolute Value- the number’s distance from 0 on the number line.

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Vocabulary
Vocabulary number line:

  • Absolute Value- the number’s distance from 0 on the number line.

  • Example: The absolute value of -3 is 3 because -3 is 3 units from 0. The absolute value of -3 is written |-3|


Real world example
Real World Example number line:

  • The altitude of an airplane changed by -50 feet in a minute while preparing to land at Midway Airport. How many feet did the airplane travel during the minute?


Real world example1
Real World Example number line:

The balance on Ms. Seweryn’s credit card statement is listed as -$125. What is the amount of her debt to the credit card company?


Whiteboards
Whiteboards number line:

Find the absolute value:

|-7|

|5|

|-20|

|9|

|-27|


Absolute value game memory
Absolute Value Game- Memory! number line:

  • Rules:

  • Work with a partner.

  • When you have your cards, place all cards face down on desk.

  • Pick up a card. Try and find the card that has the matching absolute value as the card in your hand.

  • If the card you pick up is not the match, flip both cards over and place back on desk.

  • Take turns and continue until all pairs are found.

  • Whoever has the most pairs at the end of the game is the winner!


Discussion
Discussion number line:

  • Do you think a number’s absolute value can be 0? If so, which number has an absolute value of 0? If not, explain.

  • If a number is _________, then the number is equal to its absolute value.

  • If a number is _________, then the number is less than its absolute value.

  • Negative numbers are less than positive numbers. Does this mean that the absolute value of a negative number must be less than the absolute value of a positive number? Explain.


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