Review 1.3 Evaluate the expression Copy and complete using < or > Order the numbers from least to greatest

Objective: Compare and order integers Pre-Algebra Section 1.4 Objective: Compare and order integers

Reminders Check Infinite Campus for current grade 1.1 - 1.4 quiz on 9/14

Vocabulary Integers Positive Integers Negative Integers 1 2 3 4 5 6 -1 The numbers …, -3, -2, -1, 0, 1, 2, 3, … Positive Integers All integers greater than 0 Negative Integers All integers less than 0 1 2 3 4 5 6 -1 -2 -3 -4 -5 -6 Negative Integers Positive Integers

Example 1 Graph the integers on a number line. Then write them in order from least to greatest. -7, 3, -5, 0, -1 Least to greatest = From left to right -7, -5, -1, 0, 3 -2 -1 1 2 3 4 -3 -4 -5 -6 -7 -8

Absolute Value Distance from 0 on a number line. Always positive or 0 Symbol: Examples: 5 units 1 2 3 4 5 6 -1 -2 6 units -6 -5 -4 -3 -2 -1 -7 1 1 2 3 4 5 6 -1 -2

Opposites Same absolute values, but different signs. Just change the sign! Also called Additive Inverse Examples: 10 and -10 -7 and 7 a and –a NOTE: -a is read “the opposite of a” NOT “negative a”

Your Turn Write the absolute value and opposite of: 3 -1 10 -11

Example 2 Evaluate the expression when y = -5 -y Opposite of -5

Your Turn Evaluate the expression when x = -4

Classwork – Pre-Alg. 1.4 Write from least to greatest: -9, 12, 6, -3, 0, -5 Write the absolute value and opposite of: 1 3) -9 15 5) -12 Evaluate the expression when x = -3 7) 9)

How do negative and positive integers relate to real life? Closure 1.4 How do negative and positive integers relate to real life?