Question

Use the additive inverse to find 23.45−68.7
.(1 point)
Responses

92.15
92.15

45.25
45.25

−45.25
negative 45.25

−44.75

Answer 1

To use the additive inverse to find \( 23.45 - 68.7 \), we can rewrite the subtraction as the addition of a negative number:

\[
23.45 - 68.7 = 23.45 + (-68.7)
\]

Now, we can perform the addition. First, let's compute \( 23.45 + (-68.7) \):

1. Convert \( 68.7 \) to its negative additive inverse: \( -68.7 \).
2. Line up the numbers for addition:

\[
\begin{array}{r}
23.45 \\
+ (-68.70) \\
\hline
\end{array}
\]

3. Add the values:

\[
23.45 - 68.70 = 23.45 + (-68.70) = -45.25
\]

Thus, \( 23.45 - 68.7 = -45.25 \).

Therefore, the correct response is:

\(-45.25\).