A very useful tool for working on math facts, fractions and other 3rd grade math skills is found at this web site. A link is provided for easy access. For today’s homework practicing adding and subtracting 2 or 3 digits is found under addition C.1. It is not necessary to subscribe to this site because a student is allowed a 20 minute practice session every day and this should be a sufficient amount of time to work on a particular skill.