Math Flashcard

Front

What is the Least Common Multiple (LCM)?

Back

The Least Common Multiple (LCM) of two numbers is the smallest multiple that is evenly divisible by both numbers.

Front

How do you find the LCM of 6 and 4?

Back

List the multiples of each number: Multiples of 6: 6, 12, 18, 24...; Multiples of 4: 4, 8, 12, 16...; The LCM is 12.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative sizes of two or more values.

Front

How do you write a ratio comparing boys to total students in a class of 30 with 10 boys?

Back

The ratio is 10 to 30.

Front

What is a proportion?

Back

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

Front

How do you solve the proportion 2/x = 4/10?

Back

Cross-multiply to get 2 * 10 = 4 * x, which simplifies to 20 = 4x. Then, divide both sides by 4 to find x = 5.

Front

What is the formula for speed?

Back

Speed = Distance / Time.

Front

If Bailey drove 50 miles in 2 hours, what is her speed?

Back

Speed = 50 miles / 2 hours = 25 miles per hour.

Front

How long would it take Bailey to drive 100 miles at the same speed?

Back

Time = Distance / Speed = 100 miles / 25 miles per hour = 4 hours.

Front

What is the definition of time?

Back

Time is a measure of the duration of events and the intervals between them.