Adding Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you add two positive rational numbers?

Back

To add two positive rational numbers, simply add their numerators and keep the denominator the same.

Front

What is the sum of 1/4 and 1/4?

Back

1/4 + 1/4 = 2/4 = 1/2.

Front

How do you add a positive and a negative rational number?

Back

To add a positive and a negative rational number, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the sum of -3/5 and 2/5?

Back

-3/5 + 2/5 = (-3 + 2)/5 = -1/5.

Front

What is the first step in adding fractions with different denominators?

Back

Find a common denominator for the fractions.

Front

How do you find a common denominator for 1/3 and 1/4?

Back

The least common denominator (LCD) of 1/3 and 1/4 is 12.

Front

What is the sum of 1/3 and 1/4?

Back

1/3 + 1/4 = 4/12 + 3/12 = 7/12.

Front

What is the final bank balance if you start with $50 and add $100?

Back

$50 + $100 = $150.

Front

If you withdraw $30 from your bank account with a balance of $150, what is the new balance?

Back

$150 - $30 = $120.