lesson 1.4 comparing and ordering integers essential question: how do you compare and order...
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Lesson 1.4 Comparing and Ordering Integers
Essential Question: How do you compare and order integers?
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Key Vocabulary
• Integers: all whole numbers and their opposites
• Negative Integers: integers less than zero
• Positive Integers: integers great than zero
• Absolute Value: how far a number is from zero
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Example 1: Graphing and Ordering
• Water freezes at 0°C, but some animals can resist freezing by producing a chemical called the supercooling point. Which insect has the lowest supercooling point?
Insect Supercooling point (°C)
Arctic Beetle -54
Gail Beetle -35
Goldenrod gallfly -9
Snow flea -19
Wooly bear caterpillar -70
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Example 2: Finding the Absolute Value
• a.5
• b.-7
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Example 3: Opposites
• a. 6
• b. -15
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Example 4: Evaluating
• Evaluate the expression when y=-5
– a. –y
– b. 17- |y|