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## PowerPoint Slideshow about ' Absolute Value' - locke

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Presentation Transcript

Plot the following points and its opposite number on the number line:

-7 5 6 -2 8 -4

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 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 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?

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 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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