Understand Positive and Negative Numbers

Positive and Negative Numbers

Understand, Compare and Order

Examples of Positive and Negative Numbers

Altitude - above sea level is positive, below sea level is negative.

Temperature - temperatures above zero are positive, below zero are negative.

Money - savings and deposits are positive, loans and withdrawals are negative.

Science - protons have a positive charge and electrons have a negative charge.

Sports- a gain of yards/points is positive, loss of yards/points is negative

Multiple Select

Select ALL the scenarios that describe a positive integer

• Loan of $10

• deposit of $20

• 4 feet below sea level

•  $8\degree$   above freezing

• gain of 6 pts 

Multiple Select

Select ALL the scenarios that describe a negative integer.

• a loan of $40

• 12 feet above sea level

• $2\degree$ below freezing

• gain of 15 yards

• a withdrawl of $100

Multiple Choice

The opposite of a negative is always a ___________

• positive
• negative
• absolute value
• inequality

Multiple Choice

How do you know that 5 and -5 are opposites? 

• Because they both have a 5 
• They are the same distance from 0 and on opposite sides of 0 
• Because they are the same 
• They both are on a number line 

Multiple Choice

What is the opposite of the integer on the number line?

• 0

• -7

• 7

• 1

Multiple Choice

What is the opposite of the integer on the number line?

• 2

• -1

• 1

• 0

Multiple Choice

What is the opposite of 0?

• -0

• +0

• 0

Multiple Select

Which numbers are integers?

Select ALL that apply.

• -4

• +1.5

• $\frac{1}{2}$

• 8

• $\frac{-6}{1}$

Multiple Choice

What's a way to define absolute value?

• The value of a number
• The opposite of a number
• The distance of a number from zero
• The multiplicative inverse of a number

Multiple Choice

What is the reason that absolute value is always written as a positive?

• Absolute value is talking about numbers so it must be positive.
• Absolute value does not always have to be positive.
• Absolute value is like a clock it has only positive numbers.
• Absolute value is talking about distance, distance is always measured by positive numbers.

Multiple Choice

What is the absolute value of |-26|

• 26

• -26

Multiple Choice

|20|

• 20

• -20

Comparing Integers

• You can use a number line to compare integers

• A number farther to the left is less than a number farther to the right.

• A number farther to the right is greater than a number farther to the left.

Multiple Choice

Compare these Integers using the symbols:

< , > , or =

3 ____ -6

• <

• >

• =

Multiple Choice

Compare these Integers using the symbols:

< , > , or =

18 _____ 23

• >

• <

• =

Multiple Choice

Compare these Integers using the symbols:

< , > , or =

11 _____ -23

• >

• <

• =

Multiple Choice

Order from least to greatest:

[1, -2, 5, -5, 3, -1]

• -1, 1, -2, 3, 5, -5

• 1, -1, -2, 3, -5, 5

• 5, -5, 3, -2, -1, 1

• -5, -2, -1, 1, 3, 5

Multiple Choice

Order from least to greatest:

[1, -2, 5, -5, 3, -1]

• -1, 1, -2, 3, 5, -5

• 1, -1, -2, 3, -5, 5

• 5, -5, 3, -2, -1, 1

• -5, -2, -1, 1, 3, 5