In Math, we are currently working on Topic 4-Addition and Subtraction of Whole Numbers.  We are learning to add and subtract with and without rounding.  Rounding is used to find values that are close to a correct answer.  Rounding is a useful skill to check if an answer is reasonable.  Your child will get a lot of practice doing "mental math" either by solving an addition problem or a rounded version without paper and pencil.  Some of the new vocabulary terms you may hear your child using are compensation, counting on, breaking apart, Commutative Property of Addition, Associative Property of Addition, Identity Property of Addition, and also inverse operations.