Add and Subtract Rational Numbers flashcard

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 smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the result of adding two positive rational numbers?

Back

The result is always a positive rational number.

Front

What is the result of adding two negative rational numbers?

Back

The result is always a negative rational number.

Front

How do you subtract a rational number from another?

Back

To subtract a rational number, add its opposite. For example, a - b is the same as a + (-b).

Front

What is the sum of -3.8 and -5.6?

Back

-9.4

Front

What is the sum of 1.6 and 3.0?

Back

4.6

Front

What is the result of 1.5 - 5.7?

Back

-4.2

Front

What is the result of (-15) - (-16) - (-32)?

Back

33

Front

What is the result of 5.7 + (-7.4) + 4.1?

Back

2.4