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2012 OAA Review Stations. 7 th Grade Math. Station #3. Number Sense. 2. Find the value of the expression: . 2.4 2.8 3.6 5.4. index. 3. A microwave oven costs $92. It is on sale for 15% off. Which proportion can be used to find the final price (n) of the microwave oven?. 85/100 = n/92

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2012 OAA Review Stations

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2012 oaa review stations

2012 OAA Review Stations

7th Grade Math


Station 3

Station #3

Number Sense


2 find the value of the expression

2. Find the value of the expression:

  • 2.4

  • 2.8

  • 3.6

  • 5.4

index


2012 oaa review stations

3. A microwave oven costs $92. It is on sale for 15% off. Which proportion can be used to find the final price (n) of the microwave oven?

  • 85/100 = n/92

  • n/0.15 = 92

  • 92/100 = 85/100

  • 92/n = 15/100

index


4 which statement is always true about the sum of a negative integer and a positive integer

4. Which statement is always true about the sum of a negative integer and a positive integer?

  • The sum is zero.

  • The sum is positive.

  • The sum is negative.

  • The sum can be positive, negative or zero.

index


2012 oaa review stations

5. Jim divided –2 by an integer and his result was between –1 and 0. Which integer could have been the divisor?

  • -4

  • -1

  • 1

  • 4

index


2012 oaa review stations

6. Rani has determined that 10 beans weigh 0.25 ounces. About how many beans are there in a bag that weighs 12 ounces?

  • 48

  • 120

  • 400

  • 489

index


2012 oaa review stations

7. An airline has 400 flights a day. Of these, 80% depart before 6 p.m. Flights leaving before 6 p.m. depart on schedule ¾ of the time. How many flights leaving before 6 p.m. depart on schedule each day?

  • 155

  • 240

  • 300

  • 320

index


8 there are 2 9 bacteria in a sample how many bacteria is this

8. There are 29 bacteria in a sample. How many bacteria is this?

  • 18

  • 256

  • 512

  • 1,024

index


2012 oaa review stations

9. Jackson has a board that is 6 ½ feet long. He needs a board that is ¼ of this length. What is the length of the board that Jackson needs?

  • 1 5/8 feet

  • 2 1/6 feet

  • 2 ½ feet

  • 6 ¼ feet

index


2012 oaa review stations

10. During a quality control check, a factory found that 5% of the parts it produces are defective. The factory recently completed an order for 144,000 parts. Approximately how many of the parts from the order may be defective?

  • 2,800

  • 7,200

  • 28,000

  • 72,000

index


Station 4

Station #4

Measurement


2012 oaa review stations

1. At 7:00 a.m. the temperature was 55o. The temperature was 72ºF at 3:00 p.m. Which is the most appropriate way to describe the average rate of change in temperature?

  • Degrees per hour

  • Degrees per minute

  • Hours per degree

  • Minutes per degree

Index


2012 oaa review stations

2. Aaron is tiling a floor. The floor measures 6 feet by 5 feet. Aaron is using square tiles with sides that measure 3 inches. How many tiles will it take to cover the entire floor?

  • 30 tiles

  • 90 tiles

  • 270 tiles

  • 480 tiles

Index


2012 oaa review stations

3. A circle is cut out of a square as shown. What is the approximate area of the shaded portion of the figure?

  • 22 square feet

  • 37 square feet

  • 69 square feet

  • 85 square feet

Index


4 tina created a display as shown below what is the total area of her display

4. Tina created a display as shown below. What is the total area of her display?

  • 1,152 square inches

  • 1,440 square inches

  • 2,016 square inches

  • 2,880 square inches

Index


2012 oaa review stations

5. Dave wants to estimate the distance from Harrisburg to Jonestown. The distance on the map is about 13 inches. The scale on the map indicates that 2.5 inches = 6 miles. About how many miles is it from Harrisburg to Jonestown?

  • 5 miles

  • 15 miles

  • 31 miles

  • 39 miles

Index


7 an angle is shown on this protractor estimate the measure of the angle to the nearest degree

7. An angle is shown on this protractor. Estimate the measure of the angle to the nearest degree.

  • 23°

  • 26°

  • 27°

  • 37°

Index


2012 oaa review stations

9. A packing company is changing the size of a shipping carton. The carton is in the shape of a rectangular prism. The height of the carton will be doubled and the width will be tripled.  By what scale factor will the volume of the original carton increase?

  • 5

  • 6

  • 9

  • 36

Index


Station 5

Station #5

Geometry


1 which statement is a characteristic of all parallelograms

1. Which statement is a characteristic of all parallelograms?

  • Adjacent sides are congruent.

  • Adjacent sides are perpendicular.

  • Opposite angles are congruent

  • Opposite angles are supplementary

index


2012 oaa review stations

2. Coral was asked to draw a rhombus on the chalkboard.Coral drew a square.Ken told Coral that she didn’t draw a rhombus. Coral responded, “A square is a rhombus.” Which statement supports Coral’s reasoning that a square is a rhombus?

  • A rhombus must have at least four sides.

  • A rhombus must have one pair of parallel sides.

  • A rhombus must have right angles.

  • A rhombus must have four congruent sides.

index


3 parallelogram efgh is similar to parallelogram wxyz what is the length of wz

3. Parallelogram EFGH is similar to parallelogram WXYZ. What is the length of WZ?

  • 3 in.

  • 6 in.

  • 7 in.

  • 9 in.

index


2012 oaa review stations

4. Jason made a model stop sign for his model train set. An actual stop sign measures 12 inches on each side. Jason’s model stop sign measures ½ inch on each side. What is the scale of the model sign to the actual sign?

  • 1 : 2

  • 1 : 6

  • 1 : 12

  • 1 : 24

index


5 a figure is shown which degree of rotational symmetry does this figure have

5. A figure is shown. Which degree of rotational symmetry does this figure have?

  • 90

  • 120

  • 180

  • 270

index


6 two interior angles of triangle fgh measure 25 o and 50 what is the measure of hfg

6. Two interior angles of triangle FGH measure 25 o and 50. What is the measure of HFG?

  • 15 o

  • 25 o

  • 90 o

  • 105 o

index


2012 oaa review stations

7. A rectangular garden has the dimensions shown. A pathway cuts diagonally through the garden. What is the length of the pathway?

  • 25 feet

  • 34 feet

  • 46 feet

  • 92 feet

index


2012 oaa review stations

8. Lance is 5 feet tall. His shadow is 8 feet long. At the same time of day, a tree’s shadow is 32 feet long. What is the height of the tree?

  • 20 feet

  • 24 feet

  • 29 feet

  • 51 feet

index


2012 oaa review stations

9. Triangle LMN is shown on the graph. Triangle LMN is translated three units to the right and two units down. What are the coordinates of the vertices for triangle L′ M ′ N ′?

  • L ′ (–3, 1), M ′ (3, 4), N ′ (5, 1)

  • L ′ (–4, 1), M ′ (5, 1), N ′ (2, 4)

  • L ′ (5, 1), M ′ (3, 1), N ′ (2, 4)

  • L ′(4, 3), M ′(1, 5), N ′(1, –3)

index


Station 6

Station #6

Patterns, Functions, & Algebra


3 which pattern is non linear

3. Which pattern is non-linear?

  • –4,  2,  8,  14,  20,  …

  • 2, 4, 8, 16, 32, …

  • 3, 6, 9, 12, 15, …

  • 5,  9,  13,  17,  21, …

Index


2012 oaa review stations

4. Kwame bought three rose bushes and two maple trees. Each rose bush costs $15. Kwame spent a total of $67. Let t represent the cost of one maple tree. Which equation is one way to represent this situation?

  • 2t + 3(15) = 67

  • 2t + 3t = 67

  • 2t + 3t = 67t

  • 3t + 2(15) = 67

Index


5 simplify 3x 2 3x x 2 5 5x

5. Simplify:  3x2 + 3x – x2 + 5 + 5x   

  • 3x 2 + 8x + 5

  • 10x2 + 5

  • 15x6

  • 2x2 + 8x +5

Index


6 which expression is equivalent to 5 a a b

6. Which expression is equivalent to 5(a + a + b)?

  • 15ab

  • 10a + b

  • 5a + 5b

  • 10a + 5b

Index


2012 oaa review stations

7. A shipping company uses a formula to determine the cost for shipping a package: c = 2.79 + 0.38p, where c is the cost of shipping and p is the number of pounds. What is the cost of shipping a package that weighs 8 pounds?

  • $2.79

  • $3.04

  • $5.21

  • $5.83

Index


2012 oaa review stations

8. The relationship between x and y is y = –2 x + 7. How does the value of y change when x increases from 0 to 3?

  • y decreases by 6

  • y decreases by 3

  • y increases by 5

  • y increases by 7

Index


Station 7

Station #7

Data Analysis


2012 oaa review stations

Emily earns $12 every week. The circle graph shows how Emily uses her money each week. Emily claims that she only spends about $10.00 each week. Which statement supports Emily’s claim?

  • She saves 15% of her money each week.

  • She spends $6.00 each week on entertainment.

  • She uses 12% of her money to buy clothes

  • She buys almost $3.00 worth of snacks every week.

Index


2012 oaa review stations

2. Colby graphed some data as shown in this box-and-whisker plot. Which statement is true about Colby’s data?

  • The range of data is 25.

  • One-half of the data are below 65.

  • The median of the data is 60.

  • Three-fourths of the data are below 90.

Index


2012 oaa review stations

3. This stem and leaf plot represents the heights, in inches, of the students in Ms. Martin’s class. What is the mode of these data?

  • 54 inches

  • 59 inches

  • 60 inches

  • 65 inches

Index


2012 oaa review stations

4. Manny surveyed 24 of his classmates about their vacation plans. The bar graph shows the results. Manny’s class is representative of the entire school. What is a reasonable estimate for how many of the 300 students in the school have no vacation plans?

  • 50 students

  • 75 students

  • 100 students

  • 125 students

Index


2012 oaa review stations

5. Josh’s test scores were 95, 89, 87, 95, 86, and 88. Which measure of center will give Josh the highest final grade?

  • Mean

  • Median

  • Mode

  • All three are the same

Index


2012 oaa review stations

7.The chart shows changes in population in Ohio’s four largest cities from 1990 to 2002. Based on the chart, which claim misuses the data?

  • The population of Cincinnati decreased from 1990 to 2002.

  • Columbus was the only one of the four cities whose population increased.

  • The population of Columbus grew by about 14% from 1990 to 2002.

  • The population in Cleveland and Toledo decreased by the same number of people.

Index


2012 oaa review stations

8. Tony has one green, one white, one red and one blue shirt. He also has one pair of black jeans and one pair of blue jeans. He randomly chooses a shirt and a pair of jeans from his closet. What is the probability that Tony chooses a white shirt and a pair of blue jeans?

  • 1/8

  • ¼

  • ½

  • 3/4

Index


9 sam spins this spinner 120 times how many times can sam expect to land on blue

9. Sam spins this spinner 120 times. How many times can Sam expect to land on blue?

  • 5

  • 12

  • 20

  • 24

Index


2012 oaa review stations

10. Robyn rolled a number cube 60 times in an experiment. Her results are shown in this table. What was the experimental probability of rolling a 6?

  • ¼

  • 1/6

  • 1/10

  • 1/15

Index


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