Comparing and Scaling

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, you can cross-multiply and solve for the unknown. For example, if a/b = c/x, then a*x = b*c.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time. It measures how fast an object is moving.

Front

How do you convert ounces to cups?

Back

To convert ounces to cups, divide the number of ounces by 8, since there are 8 ounces in a cup.

Front

What is the total amount of juice needed for 160 people if each person gets 1 cup?

Back

You need 160 cups of juice, which is equivalent to 10 gallons (since there are 16 cups in a gallon).

Front

How do you calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) * 100. This formula helps to find out what fraction of the whole is represented by the part.

Front

If 20 tickets cost $16, what is the cost of one ticket?

Back

Cost of one ticket = Total cost / Number of tickets = $16 / 20 = $0.80.

Front

How do you find the number of items you can buy with a certain amount of money?

Back

To find the number of items you can buy, divide the total amount of money by the cost of one item.

Front

What is the relationship between distance, speed, and time?

Back

Distance = Speed x Time. This relationship shows how far an object travels over a period of time at a certain speed.

Front

How do you calculate the number of batches needed for a recipe?

Back

To calculate the number of batches needed, divide the total amount required by the amount produced in one batch.