Operations with 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 different signs?

Back

When adding two rational numbers with different signs, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is the result of -2 + 4?

Back

The result is 2.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the decimal equivalent of 3/4?

Back

The decimal equivalent of 3/4 is 0.75.

Front

How do you rewrite a subtraction expression as an addition expression?

Back

To rewrite a subtraction expression as an addition expression, change the subtraction of a negative number to addition. For example, -8 - (-4) becomes -8 + 4.

Front

What is the result of 3 + -7?

Back

The result is -4.

Front

What is the decimal equivalent of 1/4?

Back

The decimal equivalent of 1/4 is 0.25.

Front

What is the process for adding two rational numbers?

Back

To add two rational numbers, find a common denominator if necessary, then add the numerators and keep the denominator the same.

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, convert the subtraction into addition by adding the opposite of the second number.