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7 th Grade Math Pg. 80-81. I can read and write integers and find the absolute value of a number.

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Presentation on theme: "7 th Grade Math Pg. 80-81. I can read and write integers and find the absolute value of a number."— Presentation transcript:

1 7 th Grade Math Pg. 80-81

2 I can read and write integers and find the absolute value of a number.

3 Numbers like 5 and -8 are called integers. An integer is any number from the set {…-4, -3, -2, -1, 0, 1, 2, 3, 4,…} where … means continues without end.

4 Negative integers are integers less than zero. They are written with a – sign. Positive integers are integers greater than zero. They can be written with or without a + sign.

5 Graph – Integers can be graphed on a number line. To graph a point on the number line, draw a point on the line at its location. Absolute value – The absolute value of a number is the distance between the number and zero on a number line.

6 Write an integer for each situation. 1.) 6 degrees above normal 2.) 2 inches below normal

7 Graph the set of integers {4, -6, 0} on a number line. Hint: First, draw the a number line. Then draw a dot at the location of each integer.

8 What is the absolute value of -5? What is the absolute value of 5? Evaluate the following expressions. 1.) І -4 I 2.) I-5I – I 2 I


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