Snow Day Math Flashcard

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you calculate a ratio of two quantities?

Back

To calculate a ratio, divide each quantity by the greatest common divisor (GCD) of the two numbers.

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100.

Front

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

Back

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

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

Cross-multiply the two ratios and set them equal to each other to solve for the unknown.

Front

What is the formula for finding the time taken to complete a task based on a fraction of the task completed?

Back

If it takes 't' hours to complete 'f' of a task, the time to complete the whole task is t / f.

Front

How do you determine the number of workers needed to complete a task in a given time?

Back

Use the formula: (Number of workers) x (Time taken) = (Work done). Adjust the number of workers based on the desired time.

Front

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

Back

The relationship is given by the formula: Distance = Speed x Time.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.