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9-2 Comparing and Ordering Integers Learn to compare and order integers.

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9-2 Comparing and Ordering Integers Numbers on a number line increase in value as you move from left to right. Remember!

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9-2 Comparing and Ordering Integers Additional Example 1: Comparing Integers Use the number line to compare each pair of integers. Write. A. –2 2 B. 3 –5 C. –1 –4 –5 –4 –3 –2 –1 0 1 2 3 4 5 –2 is to the left of 2 on the number line.–2 < 2 3 > –53 is to the right of –5 on the number line. –1 is to the right of –4 on the number line.–1 > –4

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9-2 Comparing and Ordering Integers Check It Out: Example 1 Use the number line to compare each pair of integers. Write. A. –2 1 B. 2 –3 C. –3 –4 –5 –4 –3 –2 –1 0 1 2 3 4 5 –2 is to the left of 1 on the number line.–2 < 1 2 > –32 is to the right of –3 on the number line. –3 is to the right of –4 on the number line.–3 > –4

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9-2 Comparing and Ordering Integers Additional Example 2: Ordering Integers Order the integers in each set from least to greatest. A. –2, 3, –1 B. 4, –3, –5, 2 –3 –2 –1 0 1 2 3 Graph the integers on the same number line. Then read the numbers from left to right: –2, –1, 3. –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 Graph the integers on the same number line. Then read the numbers from left to right: –5, –3, 2, 4.

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9-2 Comparing and Ordering Integers Check It Out: Example 2 Order the integers in each set from least to greatest. A. –2, 2, –3 B. 6, –2, 5, –3 –3 –2 –1 0 1 2 3 Graph the integers on the same number line. Then read the numbers from left to right: –3, –2, 2. –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 Graph the integers on the same number line. Then read the numbers from left to right: –3, –2, 5, 6.

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9-2 Comparing and Ordering Integers Additional Example 3: Problem Solving Application 1 Understand the Problem The answer will be the player with the lowest score. List the important information: Craig scored +2. Cameron scored +3. Rob scored –1. In a golf match, Craig scored +2, Cameron scored +3, and Rob scored –1. Who won the golf match?

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9-2 Comparing and Ordering Integers Additional Example 3 Continued 2 Make a Plan You can draw a diagram to order the scores from least to greatest. Solve 3 Draw a number line and graph each player’s score on it. –3 –2 –1 0 1 2 3 Rob’s score, –1, is farthest to the left, so it is the lowest score. Rob won the golf match.

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9-2 Comparing and Ordering Integers Additional Example 3 Continued Negative integers are always less than positive integers, so neither Craig nor Cameron won the golf match. Look Back 4

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9-2 Comparing and Ordering Integers Check It Out: Example 3 1 Understand the Problem The answer will be the player with the lowest score. List the important information: Melissa scored +6. Trista scored –3. Alyssa scored –1. In a golf match, Melissa scored +6, Trista scored –3, and Alyssa scored –1. Who won the golf match?

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9-2 Comparing and Ordering Integers Check It Out: Example 3 Continued 2 Make a Plan You can draw a diagram to order the scores from least to greatest. Solve 3 Draw a number line and graph each player’s score on it. Trista’s score, –3, is farthest to the left, so it is the lowest score. Trista won the golf match. –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6

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9-2 Comparing and Ordering Integers Negative integers are always less than positive integers, so Melissa cannot be the winner. Since Trista’s score of –3 is less than Alyssa’s score of –1, Trista won. Look Back 4 Check It Out: Example 3 Continued

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