Integers
Order the values from least to greatest:
-12, -26, 15, 12, 10
-26, -12, 10, 12, 15
Write the rational number as a decimal.
-5 7/12
-5.583; the three repeats itself
Solve the equation.
s - 3 1/6 = - 2 1/2
s = 2/3
Write the ratio as a fraction in simplest form.
51 correct : 9 incorrect
17/3
Tell whether the ratios form a proportion.
1/2 and 5/10
Yes
Add:
13 + (-21) + 16
8
Add. Write the fraction in simplest form.
2 5/6 + (-8/15)
2 3/10
Solve the equation.
c - 7.6 = -4
c = 3.6
Find the unit rate.
297 words in 5.5 minutes
54 words per minute
Tell whether the two rates form a proportion.
12 players from 21 teams; 15 players from 24 teams
Evaluate the expression when k= -3, m= -6, and n= 9.
-5 + k - n
-17
Divide.
-3.45 / (-15)
0.23
Solve the equation.
- 14.4 = - 0.6n
n = 24
At 1:00 pm, you have 24 megabytes of a movie. At 1:15 pm, you have 96 megabytes. What is the download rate in megabytes per minute?
4.8 megabytes per minute
Solve the proportion.
1.4/2.5 = h/25
h = 14
Find the next two numbers in the pattern.
-12, 60, -300, 1500 ...
-7500 and 37,500
A 14.5 gallon gasoline tank is 3/4 full. How many gallons will it take to fill the tank?
3 5/8 gallons
Write an algebraic equation and then solve.
A company makes a profit of $1.38 million. This is $2.54 million more than last year. What was the profit last year?
Algebraic equation: P + $2.54 = $1.38
Solution: a loss of $1.16 million
In 2000, the U.S. population was 281 million people. In 2008, it was 305 million. What was the rate of population change per year?
3,000,000 people per year
In an orchestra, the ratio of trombones to violas is 1 to 3.
a. There are nine violas. Write a proportion that gives the number "t" of trombones in the orchestra.
b. How many trombones are in the orchestra?
a. 1 trombone/3 violas = t trombones/9 violas
b. 3 trombones
The regular admission price for an amusement park is $72. For a group of 15 or more, the admission price is reduced by $25. How many people need to be in a group to save $500?
20 people
A cook has 2 2/3 cups of flour. A recipe calls for 2 3/4 cups of flour. Does the cook have enough flour? If not, how much more flour is needed?
No, the cook needs 1/12 cup more.
You must scuba dive to the entrance of your room at Jule's Undersea Lodge in Key Largo, Florida. The diver is currently at a depth of - 15 feet. This is 1 foot deeper than 2/3 of the elevation of the entrance. What is the elevation of the entrance?
- 21 feet
A sports store sells three different packs of tennis balls. Which pack is the best buy?
4 packs for $11.49, 6 packs for $16.79, and 9 packs for $22.99
The 9-pack is the best buy at $2.55 per container
It costs $95 for 20 students to visit an aquarium. How much does it cost for 162 students?
$769.50