Unit 1 Review: Add and Subtract 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 rational numbers with different denominators?

Back

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

Front

What is the result of -3/7 + 4/5?

Back

The result is 13/35.

Front

What does it mean to subtract a rational number?

Back

Subtracting a rational number means to take away the value of that number from another rational number.

Front

What is the integer representation of being 20 feet below sea level?

Back

The integer representation is -20.

Front

What is the result of -5.7 + 0.9?

Back

The result is -4.8.

Front

How do you find the sum of two negative rational numbers?

Back

To find the sum of two negative rational numbers, add their absolute values and keep the negative sign.

Front

What is the result of -6.23 + 7.5?

Back

The result is 1.27.

Front

What is the first step in adding fractions?

Back

The first step is to find a common denominator.

Front

What is the definition of an integer?

Back

An integer is a whole number that can be positive, negative, or zero.