Joshua and Ellen are married and file a joint return. Three individuals qualify as their dependents: their two children, ages 5 years and 6 months, and Ellens son from a previous marriage, age 18. All parties are U.S. citizens. Joshua and Ellens combined AGI is $68,000.

Which children are "qualifying children" for the purposes of the child tax credit?

Joshua and Ellen's child tax credit is $ ______ and dependent tax credit is $.______