Probability
Based on a weather report, the probability that it will rain tomorrow is 0.13. Which word describes the likelihood that it will rain tomorrow?
unlikely
Simplify the following expression: 7a-8-12a+4?
What is -5a-4?
This symbol can be used to represent at least when writing an inequality.
What is ≥? (greater than or equal to. Recall the line under the inequality sign indicates an equality)
The expression 48y-16 represents the perimeter, in feet, of a square. Write the expression that represents the length of one side.
What is 12y-4?
The sum of two numbers is zero. If one of the numbers is 5, what is the other number?
What is -5?
Remember additive inverses add to zero.
A school principal wants to determine which type of speaker the students prefer to invite to an assembly for the entire student population. Which survey method would produce the most representative sample?
Survey every tenth student entering the school one morning (random and large sample size)
Simplify the following expression:
2 + 3(2x +5)
Hint: Use the distributive property
What is 6x +17?
Jen wants to buy a $75 skateboard. She has saved $25 so far and mows lawns to earn extra money. She earns $20 for each lawn she mows. Write an inequality to determine the number of lawns, x, she needs to mow to have enough to purchase the skateboard.
What is 25 + 20x ≥ 75?
This measure of central tendency is found by finding the sum of all values and dividing by the total number of values (average).
What is the mean?
Find the value of the following expression:
-36 ➗ 9 + 3(-7) +2
What is -23?
Peter recorded the colors of cars driving by his house of the last 25 cars. He saw 7 blue, 3 green, 5 red, 8 white, and 2 yellow. Using this data, what is the probability that the next car to drive by his house will be red or blue?
What is 12/25?
Find the value of the following expression:
(-1/3) ➗ (2/5)
Keep, Change, Flip
What is -5/6?
A coach of a baseball team orders hats for the players on his team. Each hat costs $9.95. The shipping charge for the entire order is $5.00. There is no tax on the order. The total cost of the coach’s order is less than $125 . Write an inequality that can be used to determine the greatest number of hats, h , the coach orders?
What is $9.95h + 5 < $125?
Find the value of the following: 12.5 - 31/2 + 1 1/4
Hints: Either convert all values to decimals to evaluate or use your calculator
What is -7/4?
What value will make this equation true?
-2.1 + _____ = -1 1/2
What is 0.6 or 3/5?
Kerry has a bag containing white and yellow marbles. Kerry randomly selects one marble from the bag, records the result, and returns the marble to the bag. The results of the first 65 selections are shown below: A white marble was selected 41 times. A yellow marble was selected 24 times. Based on these results, what is the probability that the next marble Kerry selects, rounded to the nearest percent, will be white?
What is 63%?
Simplify the following expression:
2(x+7) -18x + 4/5
What is -16x + 74/5?
Manny goes bowling.
He has to $25.00 spend.
He spends $4.25 to rent shoes.
He spends $2.50 for each game he bowls.
Write an inequality that Manny can use to determine x, the greatest number of games he can bowl.
What is 2.50x+ 4.25 ≤ 25 ?
At a company, a copy machine prints 175 pages in 5 minutes. If the number of pages printed is proportional to the time, in minutes, what is the unit rate?
What is 35 pages per minute? (Remember, to compute unit rate the denominator needs to be equal to 1)
Find the decimal equivalent of 7/12.
What is .583̅ (there is a repeating bar above the 3)?
A box contains paper clips of three different sizes. There are 100 small paper clips, 250 medium size paper clips, and 150 large paper clips. What is the probably that a small or medium paper clip is selected?
What is 7/10?
A store sells blue hats and green hats. Each hat is priced at $8.00 . The expression 8b+ 8g can be used to determine the total price when a customer buys any number of blue hats, b , and any number of green hats, g. Which equivalent expression could also be used to determine the total price, in dollars, of the hats?
A) 8bg B) 16bg
C) 8(b+g) D) 16(b+g)
What is C? Remember to factor out the GCF
Ms. Jacobs has $15.00 to spend on coffee and donuts. She buys coffee for $2.59. The cost of each donut is $1.09 . Write an inequality that could be used to determine the greatest number of donuts,d , that Ms. Jacobs can buy.
What is 2.59 + 1.09d ≤ 15?
A cook uses 1 3/4 teaspoons of salt to make 3 1/2 pounds of pasta. What is the unit rate, in teaspoons per pound, at which the cook uses salt to make pasta?
What is 1/2?
A number, n, is multiplied by -5/8. The product is -0.4. What is the value of n written as a fraction?
What is 16/25?