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Integers and Rational numbers
Adding & Subtracting Integers
Add & Subtract Rational Numbers
Multiplying Rational Numbers
Dividing Rational Numbers
100
The opposite of +4
-4
100
Raymond's cell phone came with 64 GB of memory. He has used 10 GB. He then uses 5 GB to record photos and videos on a recent trip. How much storage does Raymond have left?
49 GB of storage left.
100
(-4 1/2 ) - 1.75
-6.25 or (-6 1/4)
100
-3.5 * -2
+7
100
Evaluate: -40/-5
8
200
Write the decimal equivalent of 3/4
0.75
200
William's office is on the 4th floor of his office building. He walks down 2 floors in order to attend a meeting. After the meeting he walks up 3 floors to the break room to eat his lunch. What floor is the break room on?
5th floor
200
-2.63 + (3 1/5)
0.57
200
(-3/5) * (4 1/6)
(-5/2)
200
Evaluate (7/8) / (-3/4)
-1 1/6
300
On a cold winter morning, the temperature was -6 degrees Celsius. By noon, it has increased by 6 degrees. What was the temperature at noon?
0 degrees Celsius
300
Elizabeth is at the summit of a hill that is 123 ft above sea level. She walks down 45 feet below sea level, into a valley at the bottom of the hill. What is the total distance between the summit where Elizabeth started and the valley where she ended up?
168 feet
300
(-4 5/8) - (-1.24)
-3.385
300
(-5.3) * (-2.6)
13.78
300
(5 7/8) / -2.5
-2.35
400
Write the decimal equivalent of 2/3
0.66...
400
Mario walks 7 blocks from his house to a restaurant. He then walks back toward his house for 5 blocks, where he stops at bookstore. How many blocks is Mario from his house?
2 blocks
400
Edward digs a hole that is 1.3 feet below ground level. He plants a tree that is 5 1/5 feet tall from the bottom of the root to the top branch. How much of the tree is above ground?
3.9 feet
400
The price of ENVX stock is dropping at a rate of $1.45 each hour. What rational number represents the change in price after 9 hours?
-13.05
400
A submarine descends at a rate of 2.6 km per hour. If the ocean floor is 6.24 km below sea level, how long will it take the submarine to descend to the ocean floor? Round to the nearest tenth
2.4 hours
500
Is 1.2564832150... a rational number or not?
Not. It is irrational because it is nonterminating and nonrepeating.
500
Joaquin recorded a temperature of 62 degrees F this morning for science class. The temperature increase 6 1/2 degrees F in the afternoon before decreasing 8.7 degree F in the evening. What was the evening temperature?
59.8 degrees F
500
Anna withdraws $22.50 each day from her account for 6 days. If she started with $234.45, what is her account balance after the 6 days?
$99.45
500
A tanker truck fills the gas station's reservoir at the rate of 12 1/2 gallons per minute. If the reservoir was empty and it is now 35 gallons full. How long has the tanker been filling the reservoir?
2.8 minutes