STAAR Mathematics Grade 7 Sample Questions
Q1. What is 0.923 written as a percent?
A. 92.3%
B. 9.23%
C. 923.0%
D. 0.923%
Q2. For a special shade of green paint, the paint store mixed 5 parts blue to 3 parts of yellow. What is the ratio of blue paint to yellow paint?
A. 3:5
B. Cant be calculated
C. 5:3
D. 5:8
Q3. Tiya works for a florist. She worked 12 hours last week and earned $114.50. At that rate, how much will she earn if she works for 10 hours?
A. $95.42
B. $75.00
C. $120.50
D. $85.00
Q4. Evan recorded the following distances, in miles, on his bike computer form his Saturday ride: 18.17, 7.92, and 13.75. About how many miles long was his ride?
A. 50
B. 60
C. 40
D. 80
Q5. A motor spins 500 times per minute. How many times does the motor spin in one hour?
A. 20,000
B. 30,000
C. 15,000
D. 10,000
Q6. Debbie bought a DVD for $21.80. The sales tax is 5%. What is the cost of the DVD with tax included?
A. 25.00
B. 23.90
C. 22.89
D. 21.50
Q7. Kelly deposited $800 into her savings account. She left the money in the account for 2 years without making money deposits or withdrawals. The account earns 2% simple interest each year. How much money did Kelly earn in simple interest?
A. 40
B. 32
C. 25
D. 46
Q8. What is the 20th term in the following arithmetic sequence?
5, 9, 13, 17, 21, …..
A. 80
B. 91
C. 85
D. 81
Q9. A football field has a length of 130 yards and a width of 56 yards. What is the perimeter of the football field?
A. 450
B. 372
C. 455
D. 500
Q10. Mrs. King bought 1.5 L bottle of lemonade. How many cubic centimeters of lemonade does the bottle contain?
A. 1,500 cubic centimeters
B. 1,000 cubic centimeters
C. 150 cubic centimeters
D. 1,5000 cubic centimeters
Correct Answers with Explanation
Answer 1.Correct answer is A. Explanation Multiply the decimal by 100, and add a percent sign.
Move the decimal point two places to the right.
0.923 x 100 = 92.3
Insert a % sign. 92.3 %
Answer 2. Correct Answer is C. Explanation You have to use a ratio to compare the number of blue parts to the number of yellow parts.
Step 1 Break down the paint mix.
Blue = 5
Yellow = 3
Step 2 Write the ratio of blue to yellow three ways.
5 to 3 or 5/3 or 5:3.
Answer 3. Correct Answer is A. Explanation Find the unit rate.
Step 1 Write the rate as a fraction.
$114.50 / 12 hours = 9.54
Tiya earns $9.54 per hour.
Step 2. Find Tiyas pay for 10 hours.
$9.542 per hour x 10 hours = $95.42
Hence Tiya will earn $95.42 if she works 10 hours.
Answer 4. Correct Answer is C. Explanation Round to estimate the sum.
Step 1- Round each addend to the nearest ten.
18.17 -> 20
7.92 -> 10
13.75 -> 10
Step 2 Add
20 + 10 + 10 = 40
Evans ride was about 40 miles long.
Answer 5. Correct Answer is B. Explanation There are 60 minutes in one hour. Multiply the number of spins per minute by 60 to find the number of spins per hour.
60 x 500 = 30, 000
The motor spins 30,000 times per hour.
Answer 6. Correct Answer is C. Explanation Write the percent as a decimal, and multiply. Then add the sales tax to the cost of the DVD.
Step 1 Write 5% as a decimal.
5% = 5/100 = 0.05
Step 2 Multiply
0.05 x $21.80 = $1.09
The tax is $1.09.
Step 3 Add the sales tax to the cost of the DVD.
$21.80 + $1.09 = $22.89
Hence the cost of the DVD with tax included is $22.89.
Answer 7. Correct Answer is B. Explanation We have to use the formula l=prt to find the simple interest.
Step 1 Substitute the known values into the formula.
P = $800, r = 2% = 0.02 and t = 2 so l = $800 x 0.02 x 2
Step 2 Multiply.
L = $800 x (0.02 x 2) = $800 x 0.04 = $32
Kelly earned $32 in simple interest.
Answer 8. Correct Answer is D. Explanation :-
Step 1 Identify the first term in the sequence. The first term is 5.
Step 2 Find the common difference. Find the difference between terms. 9- 5 = 4
The common difference is 4.
Step 3 Use the expression for the nth term. We have to find the 20th term so n= 20 and n-1 = 19.
First term + common difference x (n-1) -> 5 + 4 x 19 = 5 + 76 = 81
The 20th term is 81.
Answer 9. Correct Answer is B. Explanation We have to use the formula for perimeter of a rectangle.
P = 2l + 2w
L = 130 yards w = 56 yards
P = 2 x 130 yd + 2 x 56 yd
P = 260 + 112 = 372 yd
The football field has a perimeter of 372 yards.
Answer 10.
Correct Answer is A. Explanation As 1 liter = 1,000 cubic centimeters
Hence for converting 1.5 L to cubic centimeters we have to multiply 1.5 by 1,000.
So 1.5 x 1000 = 1,500
The bottle contains 1,500 cubic centimeters of lemonade.
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