Adding & Subtracting Positive and Negative Rationals Numbers

Front

What is the rule for adding two negative rational numbers?

Back

When adding two negative rational numbers, you add their absolute values and keep the negative sign. For example, -2 + (-3) = -5.

Front

What is the rule for subtracting a negative rational number from a positive rational number?

Back

When subtracting a negative rational number from a positive rational number, it is equivalent to adding the absolute value of the negative number. For example, 5 - (-3) = 5 + 3 = 8.

Front

How do you add a positive and a negative rational number?

Back

To add a positive and a negative rational number, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value. For example, 4 + (-2) = 2.

Front

What is the result of -2.09 - 15.271?

Back

-17.361

Front

What is the result of 32.15 + 24.15?

Back

56.30

Front

What is the result of -2.8 + (-3.7)?

Back

-6.5

Front

What is the result of 9 + -6.73?

Back

2.27

Front

What does it mean to subtract a rational number?

Back

Subtracting a rational number means adding its opposite. For example, a - b is the same as a + (-b).

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |-3| = 3.

Front

How do you determine the sign of the result when adding two rational numbers with different signs?

Back

When adding two rational numbers with different signs, the sign of the result is determined by the number with the larger absolute value.