Integers and Their Opposites

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Presentation transcript:

Integers and Their Opposites

Objective: I can describe situations in which opposite quantities combine to make 0. (7.NS.A.1a)

Vocabulary: -Integers: A whole number that can be either positive or negative. -Opposites: The same distance away from 0, but on opposite sides of 0. -Additive Inverse: The sum of an integer and its opposite.

What is an integer? Characteristics of an integer: Examples:

Opposites Characteristics of an opposites: Examples:

EXAMPLE 1: Alexis has $15. She went to the store and spent $15. How much money does she have left?

EXAMPLE 2: Jasmine has 30 M&Ms. She ate 30 M&Ms. How many M&Ms does she have left?

EXAMPLE 3: Mrs. Gray has 25 hot dogs for her students. She sold 25 hot dogs. How many hotdogs does she have left?

EXAMPLE 4: Taylor has 6 pieces of gum. She passed out 6 pieces of gum to her friends. How many pieces of gum does she have left?

https://learnzillion https://learnzillion.com/lesson_plans/6643-understand-the-additive-inverse#fndtn-lesson

YOUR TURN…. Write down two scenarios using additive inverse. Show number line and equation. Be ready to share. 

EXIT TICKET Give me an example of an integer. What is the opposite of -6? What is the opposite of 9? Evaluate: 3 + (-3) = ? Evaluate: (-7) + 7 = ?

NUMBER TALK

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