Complete each number sentence with + or -. Use the number line tool to check your answer. $\newline$ $\begin{array}{l} 7+(-7)=0 \\ -4-(-4)=0 \end{array}$ $\newline$ $\begin{array}{l} 2+(-2)=0 \\ 5+(-5)=0 \end{array}$ $\newline$ $-6-(-6)=0$ $\newline$ A number and its opposite are called additive inverses. Additive inverses have a sum of $0$ .

Full solution

Q. Complete each number sentence with + or -. Use the number line tool to check your answer.

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\begin{array}{l} 7+(-7)=0 \\ -4-(-4)=0 \end{array}

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\begin{array}{l} 2+(-2)=0 \\ 5+(-5)=0 \end{array}

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-6-(-6)=0

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A number and its opposite are called additive inverses. Additive inverses have a sum of

0

Additive Inverses Sum: $7 + (-7) = 0$ $\newline$ Identify the operation needed to make the equation true. $\newline$ Since $7$ and $-7$ are additive inverses, their sum is $0$ . $\newline$ Calculation: $7 + (-7) = 0$
Subtracting Negatives: $-4 - (-4) = 0$ $\newline$ Identify the operation needed to make the equation true. $\newline$ Subtracting a negative is the same as adding a positive, so $-4 - (-4)$ is equivalent to $-4 + 4$ , which equals $0$ . $\newline$ Calculation: $-4 - (-4) = -4 + 4 = 0$
Additive Inverses Sum: $2 + (-2) = 0$ $\newline$ Identify the operation needed to make the equation true. $\newline$ Since $2$ and $-2$ are additive inverses, their sum is $0$ . $\newline$ Calculation: $2 + (-2) = 0$
Additive Inverses Sum: $5 + (-5) = 0$ $\newline$ Identify the operation needed to make the equation true. $\newline$ Since $5$ and $-5$ are additive inverses, their sum is $0$ . $\newline$ Calculation: $5 + (-5) = 0$
Subtracting Negatives: $-6 - (-6) = 0$ $\newline$ Identify the operation needed to make the equation true. $\newline$ Subtracting a negative is the same as adding a positive, so $-6 - (-6)$ is equivalent to $-6 + 6$ , which equals $0$ . $\newline$ Calculation: $-6 - (-6) = -6 + 6 = 0$