Adding and Subtracting 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 rational numbers with the same denominator?

Back

To add two rational numbers with the same denominator, you add the numerators and keep the denominator the same.

Front

How do you subtract two rational numbers with the same denominator?

Back

To subtract two rational numbers with the same denominator, you subtract the numerators and keep the denominator the same.

Front

What is the process for adding rational numbers with different denominators?

Back

To add rational numbers with different denominators, first find a common denominator, convert each fraction, then add the numerators.

Front

What is the process for subtracting rational numbers with different denominators?

Back

To subtract rational numbers with different denominators, find a common denominator, convert each fraction, then subtract the numerators.

Front

What is the result of 7/10 - 9/10?

Back

-1/5

Front

What is the result of -31 + -7?

Back

-38

Front

How do you represent a change in position using integers?

Back

You can represent a change in position by writing a sum of integers that reflects the gains and losses.

Front

What is the result of 6.59 + (-7.8) - (-2.41)?

Back

1.2

Front

If the temperature was 3°C and dropped by 7.5°C, what is the new temperature?

Back

-4.5°C