Week 16 - Warm 72 - 12/18

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

What does the ratio 2:5 represent?

Back

It represents the relationship between 2 cats and 5 dogs, indicating that for every 2 cats, there are 5 dogs.

Front

How do you set up a proportion?

Back

To set up a proportion, you can use the format \( \frac{a}{b} = \frac{c}{d} \), where a, b, c, and d are numbers.

Front

What is the value of \( b \) in the proportion \( \frac{12}{10} = \frac{72}{b} \)?

Back

The value of \( b \) is 60.

Front

What is the first step to solve a proportion?

Back

Cross-multiply the two ratios.

Front

What are equivalent ratios?

Back

Equivalent ratios are two or more ratios that express the same relationship between numbers.

Front

If 12 girls have brown eyes and 10 girls have blue eyes, what is the ratio of brown-eyed girls to total girls?

Back

The ratio is \( \frac{12}{22} \) or simplified to \( \frac{6}{11} \).

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first number is the numerator and the second number is the denominator.

Front

What does it mean if two ratios do not form a proportion?

Back

It means that the two ratios are not equal and do not represent the same relationship.

Front

What is the formula to find a missing value in a proportion?

Back

The formula is \( \frac{a}{b} = \frac{c}{d} \), where you can find the missing value by cross-multiplying.