Number Theory
Express 5/16 as a decimal.
What is 0.3125?
Solve the equation: -8m = 6
What is -0.75 or -3/4?
Miranda bought 48 oz. of juice for $4.80. The cost per ounce (unit price) for the juice?
What is $0.10 per ounce?
This sample is not a random sample that would be valid to determine the favorite after school activity of students in your school:
Choice A: five students at an indoor soccer center
Choice B: every eighth students on the school roster
Choice C: every twelfth student entering school in the morning
Choice D: three student from each table in the lunchroom
What is Choice A: five students at an indoor soccer center?
The probability that an event will not happen is 2/7. The probability that the event will happen.
What is 5/7?
Simplify: |98| - |-39|.
What is 59?
The value of r + 5t if r = 25 and t = 3?
What is 40?
A car traveled 210 miles in 3 hours 30 minutes. The average speed of the car in miles per hour?
What is 60 miles per hour?
These are the weights (in pounds) of the 10 students in Mrs. Baker’s class:
55, 57, 62, 62, 66, 68, 70, 71, 74, 82
The median of the data.
What is 67 pounds?
Katrina is redecorating her room. She has a choice of 5 colors of paint, 4 colors of carpet, and 3 patterns of curtains. The number of different paint colors, carpet colors, and curtain patterns.
What is 60?
Evaluate: -1 - (-3) X 2 - (-3) + (-7) x 9
What is -55?
Simplify: 15x -3y +12x -5y.
What is 27x - 8y ?
According to a label on the box of wheat crackers, 2 crackers contain 3 grams of fat. The number of grams of fat in 12 crackers.
What is 18 grams of fat?
The last 3 quiz scores for Jessica were 9, 5 and 4 while Gabby’s were 8, 6 and 7. The difference in their mean quiz scores.
What is 1?
One number is chosen at random from the set {6, 9, 10, 14, 18}. The probability that the number chosen will be a multiple of 4.
What is 0?
Express 0.5% as a fraction in simplest form.
What is 5/1,000 or 1/200?
Solve for x: 18 = -3(2x+4).
What is x = -5?
Paula buys a $75.00 tire and receives 15% discount. She has to pay 8% sales tax. Find the total cost of the tire.
What is $68.85?
Nicole randomly surveyed every tenth student who came to school on Monday. She asked each student to name his or her favorite fruit. The table below shows the results of the survey.
Fruit Number of Students
Apple 3
Orange 6
Banana 14
Blueberries 9
In a survey of 768 students at her school, she would predict this number of students would choose banana as their favorite fruit.
What is 336?
An orchard has 67 apple trees, 60 pear trees, and 30 peach trees. One tree is selected for pruning. The probability that it will be an apple tree.
What is 67/157 or roughly 43%?
Josh volunteers at a library. One weekend, he put 234 books back on the shelves. Of these books 2/3 were hardcover books and 1/3 were paperback books. Josh puts this many more hardcover books than paperback books back on the shelves.
What is 78 books?
Simplify the expression: 3(x + 5) – 2(x + 4)
What is x+7 ?
At Frankie’s Furniture store, Tom offered a salesperson $600 for a couch and a chair. The offer includes the 8% sales tax. The salesman accepts the offer. The price of the furniture, to the nearest dollar, before tax.
What is $556?
Chris received a 70, 82, and 86 on his first three tests. The grade Chris needs on his next test in order to earn an 84 average.
What is 98%?
Roman has ten cards numbered 1 to 10. The probability of picking two even-numbered cards one after the other if the first card is not replaced.
What is 2/9?