Integer Vocabulary
What is an integer?
Whole numbers and their opposites, including 0
What do you do when you add two positive integers? Is the answer positive?
Add the numbers, answer is positive
What is the first step when subtracting integers?
Keep the first number
5 + (−3) = ?
2
The temperature is 5°F and drops 3°F. What is the new temperature?
2°F
What is the opposite of −7?
7
What happens when you add two negative integers?
Add the numbers, answer is negative
What do you change?
The sign
−7 + 4 = ?
-3
You owe $8 and pay back $3. How much do you still owe?
$5
What does a positive integer represent?
A value above zero
What is the rule for adding integers with different signs?
Subtract and keep the sign of the larger number
Rewrite: 7 − (−5)
7+5
6-9=
3
A submarine is at −20 feet and rises 7 feet. Where is it now?
-13 ft
What does a negative integer represent?
A value below zero
Solve: −6 + (−4)
-10
Solve: −4 − 6
-10
−8 − (−5) = ?
−3
A bank account has −$15. You deposit $10. What is the new balance?
-5
What is the absolute value of |-9|
9
Solve: 9 + (−12)
-3
Solve: −10 − (−8)
-2
−12 + 7 = ?
-5
A hiker is at 12 feet above sea level and descends 18 feet. Where is the hiker?
6ft