When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 7$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 7\times10=70$

$\displaystyle 9$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 9\times1=9$

$\displaystyle 2$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 2\times\frac{1}{10}=.2$

$\displaystyle 5$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 5\times\frac{1}{100}=.05$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}70.00\\9.00\\ +\ .20\\ .05 \end{array}}{ \ \ \space79.25}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 3$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 3\times10=30$

$\displaystyle 6$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 6\times1=6$

$\displaystyle 7$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 7\times\frac{1}{10}=.7$

$\displaystyle 3$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 3\times\frac{1}{100}=.03$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}30.00\\6.00\\ +\ .70\\ .03 \end{array}}{ \ \ \space36.73}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 4$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 4\times10=40$

$\displaystyle 9$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 9\times1=9$

$\displaystyle 2$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 2\times\frac{1}{10}=.2$

$\displaystyle 8$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 8\times\frac{1}{100}=.08$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}40.00\\9.00\\ +\ .20\\ .08 \end{array}}{ \ \ \space49.28}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 5$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 5\times10=50$

$\displaystyle 3$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 3\times1=3$

$\displaystyle 2$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 2\times\frac{1}{10}=.2$

$\displaystyle 6$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 6\times\frac{1}{100}=.06$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}50.00\\3.00\\ +\ .20\\ .06 \end{array}}{ \ \ \space53.26}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 6$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 6\times10=60$

$\displaystyle 9$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 9\times1=9$

$\displaystyle 6$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 6\times\frac{1}{10}=.6$

$\displaystyle 2$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 2\times\frac{1}{100}=.02$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}60.00\\9.00\\ +\ .60\\ .02 \end{array}}{ \ \ \space69.62}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 7$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 7\times10=70$

$\displaystyle 9$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 9\times1=9$

$\displaystyle 1$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 1\times\frac{1}{10}=.1$

$\displaystyle 4$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 4\times\frac{1}{100}=.04$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}70.00\\9.00\\ +\ .10\\ .04 \end{array}}{ \ \ \space79.14}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 8$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 8\times10=80$

$\displaystyle 7$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 7\times1=7$

$\displaystyle 5$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 5\times\frac{1}{10}=.5$

$\displaystyle 3$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 3\times\frac{1}{100}=.03$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}80.00\\7.00\\ +\ .50\\ .03 \end{array}}{ \ \ \space87.53}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 9$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 9\times10=90$

$\displaystyle 4$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 4\times1=4$

$\displaystyle 2$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 2\times\frac{1}{10}=.2$

$\displaystyle 5$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 5\times\frac{1}{100}=.05$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}90.00\\4.00\\ +\ .20\\ .05 \end{array}}{ \ \ \space94.25}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 2$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 2\times10=20$

$\displaystyle 3$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 3\times1=3$

$\displaystyle 6$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 6\times\frac{1}{10}=.6$

$\displaystyle 5$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 5\times\frac{1}{100}=.05$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}20.00\\3.00\\ +\ .60\\ .05 \end{array}}{ \ \ \space23.65}$

When we write a number in expanded form, we multiply each digit by its place value. 

$\displaystyle 1$ is in the tens place, so we multiply by $\displaystyle 10$.

$\displaystyle 1\times10=10$

$\displaystyle 4$ is in the ones place, so we multiply by $\displaystyle 1$. 

$\displaystyle 4\times1=4$

$\displaystyle 5$ is in the tenths place, so we multiply by $\displaystyle \frac{1}{10}$. 

$\displaystyle 5\times\frac{1}{10}=.5$

$\displaystyle 5$ is in the hundredths place, so we multiply by $\displaystyle \frac{1}{100}$.

$\displaystyle 7\times\frac{1}{100}=.07$

Then we add the products together. 

$\displaystyle \frac{\begin{array}[b]{r}10.00\\4.00\\ +\ .50\\ .07 \end{array}}{ \ \ \space14.57}$