Explanation

If the smaller field is 5 acres, then the larger field is twice that size, which would be

$2\times 5=10$ acres. To find the total area of both fields, you simply add the sizes of both fields together:

$\text{Total area}=\text{Size of smaller field}+\text{Size of larger field}$ $\text{Total area}=5\text{acres}+10\text{acres}$