Following the same-sign addition rule, the sum of $-1$ and $-4$ is _____.

Arrange the steps in the correct order to add $-1 + (-4)$ using the same-sign addition rule.

What is the result of adding $-1 + (-4)$ using the same-sign addition rule?

What is the sum of $-1$ and $-4$?

According to the same-sign addition rule, what is the sum of $-1$ and $-4$?

Match each addition expression or rule component with its correct result or description based on the same-sign rule.

Calculate $-1 + (-4)$.

Find each sum. Explain the same-sign rule.

State the rule for adding integers with the same sign. Then solve $1+4$ and $-1+(-4)$.

True or false: $-1+(-4)=-5$.