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.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

Tags

CCSS.7.RP.A.2A

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.

Tags

CCSS.7.RP.A.2C

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.

Tags

CCSS.5.NF.B.7C

CCSS.5.NF.B.7B

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.

Tags

CCSS.6.EE.B.7

Front

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

Back

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

Tags

CCSS.8.EE.C.7B

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.