Coming into fifth grade, students should be able to add, subtract, multiply and divide fluently. Rounding and estimating are a few other important skills. If your child struggles with any of these concepts, spending a little time each week reviewing will be a huge benefit.
If you're looking for a way to help your child practice math beyond just doing homework, check out the following websites. They include some fun math games and helpful lessons to review what we've been doing in school.
Fun Brain (a great site for all subject areas)