Adding & 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 negative rational numbers?

Back

To add two negative rational numbers, you add their absolute values and keep the negative sign. For example, -6.5 + (-0.5) = -7.

Front

What is the result of adding a positive and a negative rational number?

Back

When adding a positive and a negative rational number, subtract the smaller absolute value from the larger absolute value and take the sign of the number with the larger absolute value.

Front

Calculate: 4.02 + 2.501

Back

6.521

Front

What is the result of subtracting a positive rational number from a negative rational number?

Back

Subtracting a positive rational number from a negative rational number results in a more negative number. For example, -6.23 - 7.5 = -13.73.

Front

How do you subtract two rational numbers?

Back

To subtract two rational numbers, you can add the first number to the opposite of the second number. For example, a - b = a + (-b).

Front

Calculate: -6.23 - 7.5

Back

-13.73

Front

What is the result of adding a positive rational number to a negative rational number?

Back

The result can be positive, negative, or zero, depending on the values of the numbers. For example, 34.5 + (-7) = 27.5.

Front

Calculate: 34.5 + (-7)

Back

27.5

Front

What is the absolute value of a rational number?

Back

The absolute value of a rational number is its distance from zero on the number line, regardless of direction. For example, |-6.5| = 6.5.