Ratio Riddles
This compares two quantities using words like to, for every, or out of.
This is a special ratio that compares two quantities with different units.
What is a rate
This is an equation that shows two ratios are equal.
What is a proportion
This word means “out of 100.”
What is percent
In percent problems, the word “of” usually tells you to do this operation.
What is multiply
This ratio compares 6 red marbles to 12 blue marbles in simplest form.
What is 1 to 2
Miles per hour is an example of this type of rate.
What is a unit rate
This strategy solves a proportion by multiplying diagonally.
What is cross multiplication
This decimal is equal to 25%.
What is 0.25
When you know the part and percent and need the whole, you usually do this.
What is divide
This ratio shows how many boys there are compared to girls if there are 8 boys and 4 girls.
What is 2 to 1
If you travel 120 miles in 4 hours, this is the unit rate.
What is 30 miles per hour
In the proportion 3/5 = x/20, this is the value of x.
What is 12
This percent is equal to the fraction 1/2.
What is 50%
To find 15% of 60, this operation is used.
What is multiplication
This ratio represents 15 students out of 60 students, written as a fraction in simplest form.
What is 1/4
If 8 notebooks cost $16, this is the cost per notebook.
What is $2 per notebook
This proportion shows 4/10 = ___/50.
What is 20
If a student answers 18 out of 20 questions correctly, this is their percent score.
What is 90%
To find the total when 30% equals 12, this operation is needed.
What is division
This ratio is equivalent to 3:5.
What is 6:10 OR 9:15 OR 12:20
A grocery store sells 6 apples for $3. This is the unit rate.
What is $0.50 per apple
If 2/3 = x/18, this is the value of x.
What is 12
40% of 80 equals this number.
What is 32
This formula helps solve percent problems: Part = ___ × Whole.
What is percent