Vocabulary
3.3333333... is a ________________ decimal.
repeating
9 + _________ = 0
-9
Sarah bought a bike that costs $260. Sarah used a coupon that was worth $55 off the cost of the bike. The addition expression ________________ can be used to find how much Sarah paid for the bike.
260+(-55)
Sarah has a debt of $-150. She spends $45 on groceries (increasing her debt) and then receives a paycheck of $200. What is her new balance?
$5
−4−(−6)=_________
2
The __________ of 4 is -4
opposite
Samuel goes to the store and buys clothes for $68. When he leaves the store he has $0 dollars. The change in amount of money that Samuel has is _____________ dollars.
-68
A shark is swimming 60 feet below the surface of the ocean. There is a fish that is 25 feet deeper than the shark. The addition expression _______________________ can be used to describe the location of the fish relative to the surface of the water.
(-60)+(-25)
The temperature at noon was -5 degrees Celsius. By evening, it dropped by 7 degrees (making it colder), but overnight, it rose by 3 degrees. What is the final temperature?
-9 degrees Celcius
The temperature outside is −2/3 degrees Celsius. If it drops another ¼ degrees, what is the new temperature?
-11/12 degrees Celcius
-3 + 3 = 0 is an example of __________.
Additive inverse
one morning, the temperature is -3 degrees Fahrenheit. At 11 am the temperature decreased by 2 degrees. At 4 pm the temperature was 0 degrees. The change in temperature from 11 am to 4pm was ______________ degrees.
5
It was 12 degrees Celsius below freezing at the top of a mountain. The weather report said the temperature would drop by 17 degrees Celsius. The subtraction expression ______________ can be used to find the final temperature.
(-12)-17
A mountain climber starts at an elevation of 200 meters below sea level. They ascend 500 meters, but then they descend 750 meters. What is their current elevation?
-450 meters
The floor of an elevator in a building is 30 feet above ground level. It travels down to the lower level of the building where the floor is 10 feet below ground level. The total distance that the elevator traveled is ______________.
40 feet
A numbers distance from zero is called ________.
absolute value
Marcus dives from the surface of the ocean to 14.5 feet below sea level. He then swims down another 6.8 feet. Marcus then swims up to the surface of the water. The change in elevation from the lowest point to the highest point is ____________.
21.3 feet
We can rewrite subtraction as using the additive inverse. The expression (-2.6)-(-6.8) can be rewritten as this addition expression. ______________.
(-2.6)+6.8
In a video game, Jamie starts with a score of -50 points. In the first level, she scores 150 points, but loses 40 points in the second level. After completing a bonus round, she gains 70 points. What is her total score?
130 points
Complete the equation. -67- ? = 0
-67
2.347902468521890... is a _____________ decimal.
irrational
An airplane descended 17800/2 feet before landing on a hill that is 800 feet above sea level. The plane needs to descend ____________ feet from the top of the hill to reach sea level.
800
The top of a mountain is at 6,790 feet above sea level. The bottom of the mountain is 3,568 feet below sea level. The subtraction expression ____________________can be used to find the total height of the mountain.
6,790-(-3,568)
A shark is swimming 60.65 feet below sea level. There is a fish 25.80 feet deeper in the water. What is the location of the fish relative to the surface of the water?
-86.45 feet
Will the answer to this expression be positive or negative? (-23)+12-16
negative