Rates, Ratios, and Percent Unit Test

Front

What is a ratio?

Back

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

Front

How do you calculate the percent decrease?

Back

Percent decrease is calculated using the formula: \( \text{Percent Decrease} = \frac{\text{Original Value} - \text{New Value}}{\text{Original Value}} \times 100 \% \)

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100, indicating how many parts out of 100.

Front

How do you find the percent change?

Back

Percent change is calculated using the formula: \( \text{Percent Change} = \frac{\text{New Value} - \text{Original Value}}{\text{Original Value}} \times 100 \% \)

Front

What is the relationship between ratios and fractions?

Back

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

Front

If a shirt costs $36 and is on sale for $24, what is the percent decrease?

Back

The percent decrease is 33%.

Front

If Isla's recipe calls for 2 cups of granola for every 5 tablespoons of M&M's, how many cups of granola are needed for 30 tablespoons?

Back

Isla will need 12 cups of granola.

Front

Back

y = 4.

Front

In 1999, the price of fuel was $1.09, and in 2015 it was $1.89. What is the percent change?

Back

The percent change is a 73% increase.

Front

Ava scored 80% on a test out of 70 points. How many points did she score?

Back

Ava scored 56 points.