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

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

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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

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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

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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

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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

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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

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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

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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

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