1. The problem asks us to find the sum of 10.507 and 0.950. 2. The formula for addition is straightforward: $$a + b = \text{sum}$$ where $a = 10.507$ and $b = 0.950$. 3. Align the decimal points and add the numbers: $$\begin{array}{r} 10.507 \\ +\ 0.950 \\ \hline \end{array}$$ 4. Add digit by digit from right to left: - Thousandths place: $7 + 0 = 7$ - Hundredths place: $0 + 5 = 5$ - Tenths place: $5 + 9 = 14$, write $4$ and carry over $1$ - Units place: $0 + 0 + 1 (carry) = 1$ - Tens place: $1 + 0 = 1$ 5. So the sum is: $$10.507 + 0.950 = 11.457$$ 6. Therefore, the answer is **11.457**.