Download Positive Numbers and the Number Line

Negative Numbers and the
Number Line
Unit 2 - Negative Numbers
Vocabulary
Negative Number – a number that is less
than zero.
Opposite – having the same numeral but
different signs.
Example: -6 is the opposite of 6
Integer Words & Phrases
Positive
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•
•
•
•
•
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Above sea level
Credit
Gain
Above zero
Income
Profit
Receives
Negative
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•
•
•
•
•
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Below sea level
Debit
Loss
Below zero
Spends
Withdraws
Expenses
Write a check for
Situations with Integers
Write a positive or negative number to
represent each situation.
1. 36˚F below zero
- 36˚F
2. A debit of $10,540
- $10,540
3. 29,035 feet below sea level
- 29,035 feet
A + sign isn’t necessary
4. A gain of 45 yards
for a positive number,
but you may include it if
+45 yards
you want to.
Complete the Number Line
Example
On horizontal number
lines, numbers to the
left of zero are
negative.
Draw the Number Line
Example
Draw a horizontal number line to
represent each set of numbers.
-9, -5, -4, -2, 1, 3, 5
Draw the Number Line
Example
Draw a vertical number line to
represent each set of numbers.
-1, 3, -4, 2, 0, -6, -2
On vertical number
lines, numbers below
zero are negative.
Find the Opposite of Each
Number Example
1. 10
-10
2. -15
15
3. 86
-86
4. -135
135
5. -12
12
6. 295
-295
Writing Inequalities
Example
Complete each inequality using < or >.
Use a number line to help you.
Find the Opposite of Each Number
Independent Practice
Find the opposite of each number. Place
both the number and its opposite on a
number line.
1. 5
-5
2. -8
8