Vocabulary
What is absolute value?
A numbers distance from 0 on a number line
Solve: -19 + 7 =
-12
Adding a negative number means the same thing as ______________ a ___________ number
Subtracting a positive number
A dragonfish is swimming at -900 m relative to sea level. It rises 250 m. What is the dragonfish’s new depth relative to sea level? Show your work.
-650 m
When adding, which direction do you go on a number line?
Right
What is elevation?
Height above or below a given level.
Solve: 68 + (-68) =
0
When you are adding 2 negative numbers, what sign will your sum be?
Negative
The temperature of the water at Ice Ponds in Hilo is 77°F. During a storm, the temperature changes by -12°F. What is the temperature of the water after the storm? Show your work.
65 °F
What is a negative number?
Numbers less than 0 on a number line
What are integers?
Whole numbers and their opposites
Solve: -14 + (-13) =
-27
What rule would you use to solve this equation?
-81 + 104 =
(Rule #2)
Shawn's football team gains 5 yards on the first play from its starting position. On the second play, the team loses 8 yards. Where is his team relative to its starting position?
-3 yards
Solve: 8.50 + 3.40 =
11.40
True
Solve: -28 + 32 =
4
When numbers have different signs, ______ the smaller ______, then keep the ______ of the larger number.
Subtract, absolute value, sign
Leila plays a video game and gains 8 points on her first turn. On her second turn, she loses 8 points. How many points does Leila have after her second turn?
Find the sum of 8 and -8.
0 points after her second turn.
What is the absolute value of -9728?
9728
Opposite number are numbers that are the same distance from 0 on a number line in opposite directions. What is another name for opposite number?
Additive Inverse
Solve: -72 + (-81) =
-153
When numbers have the ______ sign, add their _____ and keep the ______.
Same, values/numbers, sign
The football team loses 6 yards from its starting position. Then it loses another 4 yards. What is the teams position relative to its starting position?
Add -6 + (-4)
-10 yards
How many Squishmallows does Ms. Bailey have? Write and equation and your answer?
175