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Homework Answers. Questions?. HW Check. Homework Check. MATH7 HW Check #3 Name_____________________ Section 1.3 Score___________ LT: To evaluate variable expressions
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Questions? HW Check
Homework Check MATH7 HW Check #3 Name_____________________ Section 1.3 Score___________ LT: To evaluate variable expressions To solve problems by evaluating expressions Copy and solve the following problems. Show steps. Textbook page 16 # 12, 13, 19, 20, 21.
Integers and Absolute Value Lesson 1.4
Learning Targets To represent, graph, and order integers. To find opposites and absolute values
Definitions Counting/ Numbers {1, 2, 3, 4, 5, 6, 7,…..}Zero is not in this set. It has no negative numbers. There are no numbers with decimals or fractions attached. Whole Numbers{0, 1, 2, 3, 4, 5, 6, 7,…..} This set has the number 0 and all of the Counting Numbers in it. Integers {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5,…..} This set consists of the Whole Numbers and their opposites, or, you might say, and their negatives.
Using a Number Line Find the following Numbers on a Number Line. -5 12 0 -9
Example Temperature Write a number to represent the temperature shown by the thermometer.
Ordering Numbers Graph −1, 4, and −5 on a number line. Order the numbers from least to greatest.
Practice Graph 0, 2, and –6 on a number line. Order the numbers from least to greatest
Opposites Numbers that are the same distance from zero on a number line but in opposite directions are called opposites.
Absolute Value Integers are the whole numbers and their opposites. A number's distance from zero on the number line is called its absolute value. You write the absolute value of 3 as | 3 |.
Absolute Value Use a number line to find | −3 | and | 3 |.
Group Work How many ways can you describer the following numbers?
Homework 1st and 2nd period – pg. 20 (1-15, 22-27, 31-48) 4th, 5th, and 7th pg. 20 (1-15, 22-27, 31-48)