Ratios, Rates, and Percents
How many ways are there to solve a proportion?
What are they?
3
Cross Multiply, Up/Down, Side to Side
The radius of a small wading pool is 3 feet. What is the circumference of this pool?
18.84 ft squared
What are the 4 attributes of similar figures?
Same shape
Different size
Proportional sides
Congruent angles
How do I check to see if my answer is right when solving an equation/inequality?
Plug the answer in for the variable that is in the equation/inequality.
What does inverse operation mean?
Give an example
An inverse operation means the opposite operation.
An example would be "The inverse operation of multiplication is division".
The M & P Pencil company that makes mechanical pencils expects to have two defective pencils for every 125 made. What is a reasonable number of defective pencils to expect in a batch of 4,375?
70 defective pencils
A lawn sprinkler can spray up to 20 feet. If it sprays in a circular pattern, what is the approximate area in square feet watered by the sprinkler?
1200 ft squared
The Empire State Building is 1250 feet tall and cast a 40.5 foot shadow. The Eiffel Tower is 984 feet tall. How long would the shadow be?
About 32 feet
Solve for x:
2x + 5 = 17
x = 6
Jessica went to the grocery store and purchased a box of cereal for $3.75, milk for $1.50, and bread for $2.25. She paid with a $20.00 bill. How much change did Jessica receive?
$12.50
A bag of chestnuts costs $3.84, including tax. There are 48 chestnuts in each bag. What would be the cost of 60 chestnuts?
$4.80
The triangular faces of a prism have a base of 4 centimeters and a height of 4 centimeters with a length of 10 centimeters. What is the volume?
80 cubic centimeters
Sharon wants to resize an inch by 10-inch digital photo on her computer. If the shorter side of the resized photo was 3 inches, what is the length of the longer side?
The length of the longer side is 30 inches.
Solve for m:
495 = 165 + 55m
m = 6
In one year, there were a total of 13,332 kidney transplants performed in the United States. Based on this data, about how many kidney transplants were performed each day?
37
Marisa took a survey and discovered that 38 out of 152 students in the seventh grade at her school have more than one pet. What percentage of the students have more than one pet?
25%
A large rectangular box has a volume of 15.75 cubic feet. The box is 2.5 feet long and 1.5 feet wide. What is the height of the box?
The height is 4.2 feet
On a map of a park, three inches represents twenty feet. How many inches would represent 12 feet?
1.8 inches
Solve for x:
3x + 2 > –1
x > -1
Solve this problem:
-144/-12
12
75% of the children at Fisher Elementary walk to school. If there are 200 students at Fisher Elementary, how many walk to school?
150 students walk to school
A backyard swimming pool is 10 meters wide, 14 meters long, and 3 meters deep. What is the pool’s volume?
420 cubic meters
On a map in a geography textbook, the scale is 1 inch equals 60 miles. What is the actual distance for a map distance of 4 1/4inches?
The distance is 255 miles.
What value of X will make the following equation true?
14x - 12 = 4 - 42x
x = 2/7
Donnie bought a kite for $17.89 and a spool of kite string for $3.45. He gave the clerk $25.00. How much change will Donnie receive?
$3.66