1. The Number System Ordering Integers 1 © 2013 Meredith S. Moody

2. Objective: You will be able to…  Order and compare integers 2 © 2013 Meredith S. Moody

3. Bigger or smaller?  When numbers are greater than zero (n>0), the further away from zero they are, the larger the quantity they represent  Think of it as having money 3 © 2013 Meredith S. Moody

4. Bigger or smaller?  When numbers are less than zero (n < 0), the further away from zero they are, the smaller the quantity they represent  Think of it as chipping away at a whole  the more you take away, the less of the whole you have left 4 © 2013 Meredith S. Moody

5. Examples  100 is greater than 50 100> 50  50 is less than 100 50 < 100  -5 is greater than -15 -5 > -15  -15 is less than -5 -15 < -5  -20 < -10 -20 is less than -10  -10 > -20 -10 is greater than -20 5 © 2013 Meredith S. Moody

6. Guided practice 1  Draw a number line that extends from -5 to 5  On the number line, order the following numbers from least to greatest: 3, (-2), 5, (-1), 0, (-4) -5 -4 -3 -2 -1 0 1 2 3 4 5 6 © 2013 Meredith S. Moody

7. Guided practice 2  Write an inequality to tell which number is greater:  -5, 10 10 > -5 OR -5 < 10  34, 78 78 > 34 OR 34 < 78  -8, -2 -2 > -8 OR -8 < -2  20 degrees above zero, 13 degrees below zero 20˚ > -13˚ OR -13˚ < 20˚ 7 © 2013 Meredith S. Moody

8. Ordering integers: You try  Draw a number line extending from -10 to 10  Place the following integers on the number line  9, -1, 2, 3, -4, -8, 7, 0, -6  Write the integers in order from least to greatest -8, -6, -4, -1, 0, 2, 3, 7, 9 8 © 2013 Meredith S. Moody

9. Comparing integers: You try  Write an inequality to represent the relationship between the two numbers  5 & -8 5 > -8 OR-8 < 5  -4 & -6 -4 > -6OR-6 < -4  10 & 15 15 > 10OR10 < 15  -3 & 9 9 > -3OR-3 < 9 9 © 2013 Meredith S. Moody