STAAR math grade 7 (2021)

George started a coin collection. His dad gave him 75 coins. Each month he will add 20 coins to the collection. Which equation can be used to find y, the total number of coins in George’s collection after x months?

• y = 75x + 20

• y = 20x + 75

• y = 75x - 20

• y = 20x - 75

A building has a height of 125 meters and a length of 80 meters. On a scale drawing of the building, the height is 25 centimeters.

What is the length of the building on the scale drawing in centimeters?

• 55 cm

• 16 cm

• 20 cm

• 64 cm

Alberto’s monthly income is $3,200. Part of Alberto’s monthly budget is shown in the table. What percentage of Alberto’s income is used to pay for his rent and groceries?

• 40%

• 28%

• 64%

• 12%

The dimensions of a rectangular prism are given in the net shown. What is the total surface area of the rectangular prism in square inches?

Based on the information in the table showing the number of visitors and their preferred activities at a national park, which prediction about the preferred activity for the next 200 visitors to the park is the most reasonable?

• The number of visitors who prefer water sports will be 5 more than the number of visitors who prefer biking trails.

• The number of visitors who prefer hiking trails will be 8 more than the number of visitors who prefer water sports.

• The number of visitors who prefer camping will be 15 times the number of visitors who prefer hiking trails.

• The number of visitors who prefer camping will be 2 times the number of visitors who prefer water sports.

The dot plots show the numbers of apples picked by members of two different tour groups at an orchard. Which statement correctly compares these two data sets?

• The median of the data is the same for both data sets.

• The mode of the data is the same for both data sets.

• The range of the data is the same for both data sets.

• The distribution of the data is symmetrical for both data sets.

Members of the chess club held a bake sale to raise money. Cupcakes and cookies were sold.

* Cupcakes were sold for $1 each.

• * Cookies were sold for $0.50 each.

• * The members sold a total of 288 items.

*Of the items sold, 2/3 were cupcakes and the remaining items were cookies.

How much money did the chess club members raise from the cookies that were sold?

• $72.00

• $96.00

• $48.00

• $45.00

Marco has two number cubes. The faces of each number cube are numbered from 1 to 6. Marco rolled the number cubes and recorded the number showing on the top face of each number cube.

The results are shown in the table. Based on these results, what is the experimental probability that the next time the number cubes are rolled, they will land with a 2 showing on the top face of one number cube and a 4 showing on the top face of the other number cube?

• 3/10

• 11/20

• 9/20

• 1/36

Two congruent squares and a parallelogram were used to form the figure shown. What is the area of the figure in square meters?

• 25.8 m²

• 40.8 m²

• 34.8 m²

• 28.8 m²

Triangle HJK is similar to triangle LMN. Which proportion can be used to calculate the length of LM in centimeters?