Vocabulary
The inverse operation of Subtraction
Addition
Compare the integers using <,>, or =.
0 ____ -6
> or greater than
l-20l
20
-22 + 6 =
-16
Find the difference. Write as an addition expression if necessary.
4 - 7 =
-3
A number's distance from 0 on a number line.
Absolute Value
The temperature was -4 oF at Matthew's house and -8 oF at Justin's house. Where was the temperature warmer?
Matthew's house was warmer.
l25l
25
31 + (-20) =
11
Find the difference. Write as an addition expression if necessary.
-4 - 21 =
-25
+1 and -1 make a _______
Zero Pair
Compare the integers using <, >, or =.
l-3l ___ 3
= or equal
What is the opposite of l28l?
-28
-13 + (-6) =
-19
Find the difference. Write as an addition expression if necessary.
12 - (-6) =
18
The set of whole numbers and their opposites.
Integers
Order the integers from least to greatest.
-7, -9, -2, 0, -5
-9, -7, -5, -2, 0
What is the opposite
of l-29l?
-29
The math club's income from a bake sale was $217. Expenses were $32. Use integer addition to find the club's total profit or loss.
217 + (-32) = $185 profit
The high temperature for the day was -1 oF. The low temperature for the day was -5 oF. What was the difference between the high and low temperatures for the day?
-1 - (-5) = 4
The same distance from 0 on a number line as the original number, but on the opposite side of 0.
Additive Inverse
Order the integers from least to greatest.
-3, 2, -5, -6, 5
-6, -5, -3, 2, 5
Donna says l5l and l-5l are the same number.
Alexa says l5l and l-5l are different numbers.
Christina says l5l and l-5l both equal zero.
Who is correct? Why?
Donna because absolute value is the distance from 0 on a number line and distance can never be negative.
A submarine submerged at a depth of -40 ft dives 57 ft more. What is the new depth of the submarine?
-97 ft
The highest town in the U.S. is at 11,560 ft. The lowest town is 185 ft below sea level. What is the difference in elevation?
11,560 - (-185) = 11,745 ft