Adding Rational Numbers
Subtracting Rational Numbers
Multiplying Rational Numbers
Dividing Rational Numbers
Rational Numbers - STAAR Questions
100
Mike ran 3.5 miles on Monday to prepare for an upcoming 5K race. Tuesday he ran 4 miles. Wedensday AND Thursday he ran 4.75 miles each day. Friday, Saturday, and Sunday were his rest days. How many total miles has he ran for the week?
What is 17 miles
100
The temperature on an outdoor thermometer on Monday was 5.5 degrees Celcius. The temperature on Thursday was 7.25 degrees less than the temperature on Monday. What was the temperature on Thursday?
What is -1.75 degrees Celcius
100
Gina hiked down a canyon and stopped each time she descended 1/2 miles to rest. She hiked a total of 4 sections. What is her overall change in elevation?
What is -2
100
Over 5 months, Carlos made 5 payments for a total of $323.75 to pay for his cable TV service. His cable bill is the same amount every month. How much was his bill each month?
What is $64.75
100
A baseball coach bought some bats and gloves for the school’s baseball team. The bats cost between $20 and $35, and the gloves cost between $30 and $60. Which of these does NOT represent a reasonable total purchase price for 15 bats and 12 gloves? A. $1,350 B. $890 C. $1,200 D. $705
What is $1350
200
Renee hiked for 4 3/4 miles. After resting, Renee hiked back along the same route for 2 1/6 miles. How many more miles does Renee need to hike to return to the place she started?
What is 2 and 7/12
200
During the hottest week of the summer, the water level of the Muskat river was 5/6 foot below normal. The following week, the level was 1/3 foot below normal. What is the overall change in the water level?
What is 1/2
200
The price of one share of Acme Company declined $3.50 per day for 4 days in a row. What is the overall decline of one share?
What is -$14.
200
A water pail in your backyard has a small hole in it. You notice that it has drained a total of 3.5 liters in 4 days. What is the average change in water volume each day?
What is -0.875 liter per day
200
Claudia is making a gelatin dessert for a party. She plans on making 12 servings for every 5 people. If each pan Claudia uses to make the dessert holds 8 servings, what is the minimum number of these pans that she needs in order to make enough to feed 10 people?
What is 3 pans?
300
During the day, the temperature increases by 4.5 degrees. At night, the temperature decreases by 7 degrees. What is the overall change in temperature?
What is -2.5 degrees
300
Jenny withdrew $45 from her savings account. She then used her debit card to buy groceries for $30.15. Before heading home, she deposited $100 into her account. What was the overall change in her account for the day?
What is $24.85
300
Sandy has $200 in her bank account. If she write 6 checks for 19.88 each, how much money does she have in her account after the checks are cashed?
What is $80.72
300
To avoid a storm, a passenger-jet pilot descended 0.44 mile in 0.8 minute. What was the plane average change of altitude per minute?
What is -0.55 miles per minute
300
A scientist had a bottle that contained 56.6 mL of a solution. She used 3.2 mL of the solution for an experiment. Then she poured half the solution remaining in the bottle into a beaker. Finally she poured 6 mL of the solution remaining in the bottle into a test tube. How many milliliters of solution remained in the bottle?
What is 20.7 mL
400
Tina spent $5.25 on craft supplies to make friendship bracelets. She made $3.75 on Monday. On Tuesday, she sold an additional $4.50 worth of bracelets. What was Tina's overall profit or loss?
What is $3.00
400
On Friday, your bank account was -$12.58 and because you didn't realize it, you wrote a check for $30.72 for groceries. Unfortunately, the bank charges a $25 fee for a bad check. How much do you need to deposit in order to bring your account to $0.
What is $68.30
400
For Home Economics class, Sandra has 5 cups of flour. She made 3 batches of cookies that each used 1.5 cups of flour. Write and solve an equations for the amount of flour Sandy has left.
What is 0.5 cups.
400
The running back for the Bulldogs football tam carried the ball 9 times for a total gain of only 15 3/4 yards. Find the average change in field position on each run.
What is 1 3/4 yards
400
One weekend Greg and Darius shoveled snow to earn spending money. Together they earned $12.50 an hour for 9 hours of work. Each received half the total earnings. If Greg then spent $15 on a new CD, what was the total amount he had left, in dollars and cents, from the money he earned shoveling snow that weekend?
What is $41.25
500
Kendrick adds 3/4 cup of water to a pot. Then, he adds 1 3/5 cups of chicken broth. How much total water and chicken broth is now in the pot?
What is 2 7/20
500
Mrs. Ross is going to use 6 1/3 yards of material to make two dresses. The larger dress needs 3 2/3 yards of material. How much material does Mrs. Ross have left over to make the other dress?
What is 2 and 2/3
500
Greg sets his watch for the correct time on Thursday. Exactly one week later, he finds that his watch lost 3 and 1/4 minutes. What is the overall change in time after 8 weeks?
What is 26 minutes behind
500
A seafood restaurant claims an increase of $1750 over its average profit during a week where it introduced a special. If true, how much extra profit did it receive per day?
What is $250
500
An electrician charges $75 for the first hour of labor and $60 for each additional hour of labor. A customer calculates that the electrician charges $225 for a total of 3.5 hours of labor. Is the customer correct? Prove why they are or are not correct.
What is YES because... 75 + (2.5 x 60) = 225
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