Integer Vocabulary
What is an Integer?
A whole number that can be positive, negative, or zero.
−5 + (−3) = ?
-8
Rewrite: 8 − (−3)
8+3
(−4)(3) = ?
-12
True or False: A negative times a negative is positive.
True
The temperature is −2°F and drops 5 degrees. What is the new temperature?
−7°F
What does absolute value measure?
The distance on a number line from zero.
6 + (−4) = ?
2
−4 − 6 = ?
-10
(−5)(−2) = ?
10
True or False: Subtracting a negative is the same as adding.
True
You have $10 and spend $18. Write the equation.
10-18=
What is the opposite of −7?
7
Rule check: If two numbers have the SAME sign when adding, what do you do?
Add and keep the same sign.
What is the main rule for subtracting integers?
Subtracting is the same as adding the opposite.
Same signs when multiplying give what type of answer?
Positive
Rewrite: 10 − (−5)
10+5
Solve the problem above. 10-18=?
-8
What does a negative number usually represent in real life?
Loss, decrease, below zero, or below sea level.
−7 + 9 = ?
2
5 − (−8) = ?
13
Different signs when multiplying give what type of answer?
Negative
Solve: −3 × −7
21
A diver goes down 4 meters each minute for 3 minutes. Write and solve.
−4 × 3 = −12 meters
Give ONE real-world situation where integers are used.
Temperature, money, elevation, or scores.
Rule check: If two numbers have DIFFERENT signs when adding, what do you do?
Subtract and keep the sign of the number with the greater absolute value.
Rewrite and solve: −9 − (−4)
-9 + 4= -5
(−6)(4) = ?
-24
Explain in one sentence why −8 − (−2) becomes −8 + 2.
Because subtracting a negative means adding its opposite.
A bank account loses $5 each day for 6 days. Write and solve.
−5 × 6 = −30