Probability
Bob has 12 red cards and 20 green cards. What is the ratio of Bob's red cards to his green cards? _______________
red cards: green cards
3: 5
You can buy 5 cans of green beans at a supermarket for $3.40. How much does it cost to buy 35 cans of green beans? _______________
5/3.40 and 35/x
$23.80
A cheetah ran at a speed of 75 feet per second for 7 seconds. How many feet did the cheetah run during this time?
525
Eliza can jog for 6 miles in 1.2 hours. At this rate, how many minutes does it take for Eliza to jog one mile?
12 minutes
Find the MEAN and Median
8, 12, 5, 3, 2
Mean: 6, Median: 5
In a party, 10 soft drinks are required for every 12 guests. If there are 252 guests, how many soft drinks is required? _______________
252/12 =21 21x 10=
210
The ratio of boys to girls in a class is 2:3. If there are 18 boys in the class, how many girls are in that class? _______________
2/3 and 18/x
27
A train traveled at a speed of 65 miles per hour for 8 hours. How many miles did the train travel during this time?
520
Your college is 525 miles away. If you leave for college at 9 AM, driving 75 mph the whole way, what time will you arrive on campus?
4 PM
Find the MEAN and Median
18, 15, 30, 64, 42, 11
Mean: 30, Median: 24
In Jack’s class, 18 of the students are tall and 10 are short. In Michael’s class 54 students are tall and 30 students are short. Which class has a higher ratio of tall to short students? _______________
18/10 and 54/30
The ratio for both classes is 9 to 5.
To make a specialty chocolate chip brownie, a baker needs 1.1 ounces of chocolate chips per brownie. How many pounds of chocolate chips are needed to make 40 chocolate chip brownies? (1 pound = 16 ounces)
2.75
A car traveled a distance of 385 kilometers over 7 hours. What was the average speed of the car, in kilometers per hour, during this time?
55
Cam is building a fence around a chicken coop. She needs 17.5 feet of chicken wire. If the chicken wire is sold by the full yard, how many yards of chicken wire will she need for her fence? (1 yard = 3 feet)
6 yards
If the dimensions of a rectangle are x – 2y and x + 2y, what is the area of the rectangle in terms of x and y?
A) x² – 4y² B)x² – 4xy – 4y² C)x² – 4xy + 4y² D)2x² – 4y²
x² – 4y²
The price of 3 apples at the Quick Market is $1.44. The price of 5 of the same apples at Walmart is $2.50. Which place is the better buy?
3/1.44 and 1/x
5/2.50 and 1/x
Quick Market is a better buy.
If there are 2.2 pounds in 1 kilogram, how many pounds are there in x kilograms?
A. x/2.2 B. 2.2x C. 2.2 + x D. x/2.2
2.2x
An oilfield worker was pumping fluid to a tank at a rate of 40 gallons per minute. The hose came loose and began leaking oil at the same rate for a total of 4 minutes. How many gallons of oil were lost?
160 gallons
Kat is baking a cake and requires 200 g of flour, but her kitchen scale only measures in ounces. To the nearest ounce, how many ounces of flour should Kat measure out for her cake? (1 oz = 28.35 g)
7
The wall of a room will have a square window installed. The dimensions of the wall are 14 feet by 11 feet and the side length of the window is 3 feet. What will be the area, in square feet, of the wall after the window is installed?
145
The bakers at a Bakery can make 160 bagels in 4 hours. How many bagels can they bake in 16 hours? What is that rate per hour? _______________
160/4 and x/16
640,the rate is 40 per hour.
There are 20 children in the cast of a class play, and 8 of the children are boys. Of the boys, 4 have a speaking part in the play, and of the girls, 8 do not have a speaking part in the play. If a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?
A. ⅖ B. ½ C. ⅗ D. ¾
⅖
Biking at an average rate of 4 miles per hour, how many minutes would it take Sara to bike 1 mile?
15
A car indicates that there is enough gas to travel 50 km. How many miles can the car travel before it runs out of gas? (1 km = 0.62 mi) 1. 18 2. 31 3. 50.6 4. 80.6
31
The perimeter of a rectangular piece of metal is 18 centimeters. It is 4 centimeters wide. How long is it?
5