Math Expression
Students should be able to write numbers in word forms. If parents can help with these spelling words it will help with the progression of your child's math skills.
Subtraction and addition facts are important for the fourth grade. We are starting to working with more complex numbers and students need to be fluent in basic facts. This site provides some games that are based on subtraction facts. If you look near the top tab on the page you should be able to switch to addition games as well. Have fun and practice often!
Khan Academy is a wonderful sight to use if you are looking for extra practice. This is a site that is linked to the skills that fourth graders will be responsible for learning. Please use this site for additional support, or for just extra practice.