Integers and Opposites on a Number Line Teacher Twins ©2015

Warm Up Give all of the names for each number. 1). 45 2). − 𝟔 𝟐 3). −𝟖𝟕.𝟗 Give the rational number for each situation. 4). The temperature is 8.5 degrees below zero. 5). Cyndi won $500 in a game. 6). Jason ran 𝟒 𝟐 𝟑 miles on Friday. WN, I, Rat. I, Rat. Rational - 8.5 $500 𝟒 𝟐 𝟑

Identifying numbers on a horizontal number line C 1). What is the value of A? 2). What is the value of C? 3). What number do you reach when you start at zero and move 5 units to the left? 4). What number do you reach when you start at -7 and move 3 units to the right? −𝟏 8 −5 −𝟒

-2 2 -1 -4 A B 1). What is the value of B? 2). What is the value of A? Identifying Numbers on a Vertical Number Line -2 1). What is the value of B? 2). What is the value of A? 3). What number do you reach when you move 3 units up from −𝟒? 4). What number do you reach when you move three units down from −𝟏? A 2 B -1 -4

Identifying Rational Numbers on a Number Line 1). What is the value of A? 2). What is the value of B? 3). What number do you reach when you start at zero and move 𝟓 𝟏 𝟒 units to the left? 4). What number do you reach when you start at−𝟕 𝟏 𝟐 and move 3 units to the right? −𝟒 𝟏 𝟐 𝒐𝒓 −𝟒.𝟓 𝟓 𝟏 𝟐 𝒐𝒓 𝟓.𝟓 −5 𝟏 𝟒 𝒐𝒓 −𝟓.𝟐𝟓 −𝟒 𝟏 𝟐 𝒐𝒓 −𝟒.𝟓

Opposite Numbers What is the opposite of – 6? 6 The opposite of a number is the number that is the same distance from zero on a number line but in the other direction. -6 is 6 away from zero 6 is 6 away from zero What is the opposite of – 6? 6

Real Life Examples of Opposite Numbers -4 4 La owes her mom $4.00. La pays her mom $4.00. These are opposites. -4.00 is 4 away from zero 4 is 4 away from zero

Practice 1). -2 -4 -3 -1 1 Finish labeling the number line. 2). What is the opposite of 1? Explain how you know. 3). What is the opposite of -4? Explain how you know. -1 because it is one away from zero in the opposite direction of 1 4 because it is four away from zero in the opposite direction of -4

Give an example of opposites in real life. Closure Give an example of opposites in real life.