Question

Select the number line that shows that two opposite numbers have a sum of $0$.

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

Explanation for correct option:

Finding the number line that shows that two opposite numbers have a sum of $0$

Considering Option $\left(D\right)$

The two points marked on the number line are $-1\&1$

Sum of the two numbers is,

$$\begin{gathered} =-1+1 \\ =0 \end{gathered}$$

Hence, the correct answer is Option $\left(D\right)$.

Explanation for incorrect options

Considering option $\left(A\right)$

The two points marked on the number line are $-1\&0$

Sum of the two numbers is,

$$\begin{gathered} =-1+0 \\ =-1 \\ \ne 0 \end{gathered}$$

Considering option $\left(B\right)$

The two points marked on the number line are $0\&7$

Sum of the two numbers is,

$$\begin{gathered} =7+0 \\ =7 \\ \ne 0 \end{gathered}$$

Considering option $\left(C\right)$

The two points marked on the number line are $0\&3$

Sum of the two numbers is,

$$\begin{gathered} =3+0 \\ =3 \\ \ne 0 \end{gathered}$$

Hence, the correct answer is option $\left(D\right)$.