Unit 3 Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is the ratio of large containers to small containers if a grocery store orders 4 large for every 7 small?

Back

The ratio is 4:7.

Front

If a recipe requires 3 cups of flour for every 2 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 3:2.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the decimal equivalent of the fraction \( \frac{1}{8} \)?

Back

The decimal equivalent is 0.125.

Front

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

Back

To find the percentage, divide the part by the whole and multiply by 100.

Front

What percentage of school days did Carlos walk to school if he walked 14 out of 20 days?

Back

Carlos walked to school 70% of the days.

Front

How do you calculate the percentage decrease in price?

Back

Percentage decrease = \( \frac{(original price - new price)}{original price} \times 100 \)

Front

If a sweater's price decreased from $20 to $12, what is the percentage decrease?

Back

The percentage decrease is 40%.