8th Grade Algebra (Textbook) - Chapter 0 Pretest
SHOPPING: Addison paid $1.29 for gum and $0.89 for a package of notebook paper. She gave the cashier a $5 bill. If the tax is $0.14, how much change should Addison receive?
$2.68
Order 0.5, -1/7, -0.2, and 1/3 from least to greatest.
-0.2, -1/7, 1/3, 0.5
2.4(-0.7)
-1.68
-22 ÷ 11
-2
6/25 ÷ (-3/5)
-2/5
-9 - 22
-31
-5.6 + (-30.7)
-36.3
-3/5 + (-1/5)
-4/5
63 ÷ (-9)
-7
-7/3 ---> reciprocal
-7/3
11(-8)
-88
-15 + 6
-9
5/6 + 2/3
1 1/2
1/9 • 3/4
1/12
2 1/2 • 2/15
1/3
20% ---> fraction
1/5
11/12 - 3/4
1/6
4/11 ---> reciprocal
11/4
BASKETBALL: Emily made 75% of the baskets that she attempted. If she made 9 baskets, how many attempts did he make?
12 attempts
20 + (-7)
13
23.1 + (-9.81)
13.29
24 is 60% of what number
14.4
35 is what percent of 200?
17.5%
1/2 + 4/9
17/18
DISTANCE: Luis rode his bike 1.2 miles to his friend's house, then 0.7 mile to the video store, then 1.9 miles to the library. If he rode the same route back home, about how far did he travel in all?
2(1.2 + 0.7 + 1.9) = 2.4 + 1.4 + 3.8 = 3.8 + 3.8 = 7.6 miles
One coin is randomly selected from jar containing 20 pennies, 15 nickels, 3 dimes, and 12 quarters. Find the odds of each outcome. Write in simplest form. A Penny
2/5
2/21 ÷ 1/3
2/7
18.4 - (-3.2)
21.6
GARDENS: Find the perimeter of the garden. (Figure is a scalene triangle. Base = 10m, Left slant = 4.3m, Right Slant = 8.7m
23 meters
18 is what percent of 72?
25%
1/5 • 3/20
3/100
One pencil is randomly selected from a case containing 3 red, 4 green, 2 black, and 6 blue pencils. Find each probability. P(red or blue)
3/5
-15(-2)
30
A parallelogram has side lengths of 7 inches and 11 inches. Find the perimeter.
36 inches
One pencil is randomly selected from a case containing 3 red, 4 green, 2 black, and 6 blue pencils. Find each probability. P(green)
4/15
-40.5 ÷ (-8.1)
5
-2/21 ÷ (-2/15)
5/7
7.5% ---> fraction
7 1/2
One coin is randomly selected from jar containing 20 pennies, 15 nickels, 3 dimes, and 12 quarters. Find the odds of each outcome. Write in simplest form. A Penny or Nickel
7/10
TEST SCORES: James answered 14 items correctly on a 16-item quiz. What percent did he answer correctly?
87.5%
SCHOOL: Devonte's scores on his first four Spanish tests are 92, 85, 90, and 92. What test score must Devonte earn on the fifth test so that the mean will be exactly 90?
91
7/20 O 2/5
<
0.15 O 1/8
>
BIRDS: The floor of a birdcage is a circle with a circumference of about 47.1 inches. What is the diameter of the birdcage? Round to the nearest inch.
About 14 inches
EXPENSES: The table shows how Dylan spent his money at the fair. What type of graph is the best way to display the data? Explain your reasoning and make a graph of the data.
Bar Graph
Find the circumference and area of the circle. Round to the nearest tenth. Radius: 2m
Circumference: 12.6 meters Area: 12.6 meters²
Find the circumference and area of the circle. Round to the nearest tenth. Radius: 8m
Circumference: 50.3 centimeters Area: 201.1 centimeters²
Use a tree diagram to find the sample space for the event a die is rolled, and a coin is tossed. State the number of possible outcomes.
Coin - 2 outcomes Die - 6 outcomes
a coin is tossed 50 times. The results are shown in the table. Find the experimental probability. Write as a fraction in simplest form. Lands Face-Up| heads | tails Number of Times| 22 | 28
Heads: 11/25 Tails: 14/25
Find the mean, median, and mode for each set of data. [4, 8, 9, 9, 10, 14, 16]
Mean: 10 Median: 9 Mode: 9
Find the mean, median, and mode for each set of data. [10, 11, 18, 24, 30]
Mean: 18.6 Median: 18 Mode: NONE
MUSIC: The table shows the results of a survey in which students were asked to choose which of four instruments they would like to learn. Make a bar graph of the data. Instrument Number of Students Drums 8 Guitar 12 Piano 5 Trumpet 7
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Make a double box-and-whisker plot for the data. A: 42, 50, 38, 59, 50, 44, 46, 62, 47, 35, 55, 56 B: 47, 49, 48, 49, 40, 54, 56, 42, 57, 45, 45, 46
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Find the perimeter and area. (Figure is a square with 9 inches on each side.)
Perimeter: 36 inches Area: 81 inches²
Find the perimeter and area. (Figure is a right triangle with the vertical: 12cm, horizontal: 16cm, and slant: 20cm.)
Perimeter: 58 centimeters Area: 96 centimeters²
Find the range, median, lower quartile, and upper quartile for [16, 19, 21, 24, 25, 31, 35].
Range: 19 Median: 24 Lower Quartile: 19 Upper Quartile: 31
Find the volume and surface area. L = 3 cm W = 1 cm H = 3 cm
Volume = 9 centimeters³ Surface Area: 648 centimeters²
Find the volume and surface area of the rectangular prism. L = 3 W = 2 H = 5
Volume: 30 centimeters³ Surface Area: 62 centimeters²
Find the volume and surface area. L = 6 ft W = 2 ft H = 5 ft
Volume: 60 feet³ Surface Area: 104 feet²
