Question

add. 2.3 + 7.1 =

Explanation:

Step1: Align decimal points

Align 2.3 and 7.1 by their decimal points:

$$\begin{align*} &2.3\\ +&7.1\\ \hline \end{align*}$$

Step2: Add the tenths place

Add the digits in the tenths column: $3 + 1 = 4$

Step3: Add the ones place

Add the digits in the ones column: $2 + 7 = 9$

Step4: Combine the results

Place the decimal point in the sum aligned with the addends:

$$\begin{align*} &2.3\\ +&7.1\\ \hline &9.4 \end{align*}$$

Answer:

9.4