Lesson notes on Absolute Value

1. Agenda Thurs. Oct. 29 Homework 24 p. 20 # 22 - 27, 35, 36, 38, 44 - 46 Do Now Correct homework 1-4 continued - Absolute Value

2. How many units away from zero is -10 ? The number of units, or distance, between an integer and zero is called the absolute value. How many units away from zero is +10 ? Answer 10 units 0 + 10 + 20 + 30 - 10 - 20 - 30 Answer 10 units

3. Frayer Model Examples Nonexamples Definition Characteristics absolute value a number's distance from zero on the number line

4. The absolute value of an integer is never negative because it asks, "How far away is it from zero?" Click on the arrow to help you decide if negative 15 and positive 15 are the same distance from zero. 0 + 5 + 15 + 25 - 5 - 15 - 25 Yes! No!

5. Click and drag the integers below to the correct column.

6. Absolute Value Absolute value is written with 2 bars around the number. ex. l3l, l-4l -6 6

7. Pull Pull Remember that absolute value means how far it is away from zero. Absolute value is NEVER negative. 1 0 2 3 4 5 6 7 8 9 10 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -6 6

8. Pull Pull Remember that absolute value means how far it is away from zero. Absolute value is NEVER negative. 1 0 2 3 4 5 6 7 8 9 10 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 4 4

10. Independent Practice Find the absolute value. 1. l 7 l 2. l -8 l 3. l 81 l 4. l -79 l 5. l 23 l 7 8 81 79 23

11. Match pairs of absolute values.

12. Attachments