Ratios and Proportions
If 3 apples cost $1.50, how much do 9 apples cost?
$4.50
A rectangle is 4 cm wide and 6 cm long. If it is scaled by a factor of 2, what is the new width?
8 cm
What is the median of: 3, 7, 9, 12, 15?
9
Solve: x + 9 = 17
x = 8
What is the area of a rectangle with length 8 and width 5?
40 units squared
Write the ratio 18:24 in simplest form.
3:4
A triangle has sides of 3, 4, and 5. If the scale factor is 3, what are the new side lengths?
9, 12, 15
What is the mean of: 10, 14, 18, 22, 6?
14
Solve: 3x = 24
x = 8
What is the circumference of a circle with radius 7? (Use π ≈ 3.14)
43.96 units
A car travels 150 miles in 3 hours. What is the unit rate?
50 miles per hour
A drawing of a dog is scaled up by a factor of 4 in real life. If the dog's tail is 5 cm in the drawing, how long is it in real life?
20 cm
What is the range of: 5, 13, 2, 19, 8?
17
Solve: 2x + 5 = 19
x = 7
A triangle has a base of 10 and height of 6. What is its area?
30 units squared
If the scale on a map is 1 inch = 25 miles, how many miles is 4.5 inches?
112.5 miles
A rectangle is 10 cm by 8 cm. It is scaled down by a factor of ½. What is the area of the new rectangle?
20 cm squared
A data set has values: 4, 4, 7, 9, 11. What is the mode and mean?
Mode - 4
Mean - 7
Solve: 1/4x − 3 = 5
x = 32
What is the volume of a rectangular prism with length of 5, a width of 4 and a height of 3?
60 units cubed
A recipe uses 2½ cups of flour for 24 cookies. How much flour is needed for 60 cookies?"
6¼ cups
A map uses a scale of 1 cm = 15 km. Two cities are 8.5 cm apart on the map. What is the actual distance?
127.5 km
Put this data set in order and find the median: 22, 15, 9, 31, 18, 7, 25
18
Write AND solve: Seven more than twice a number is 23.
2n + 7 = 23
n = 8
A parallelogram has a base of 12 and a height of 7. What is its area?
84 units squared