Find the missing number that makes a sum or difference equal 10 or 20, such as 15 + __ = 20.
Standards are described in our own words. Read the official Virginia SOL document.
Tell us what would help your class practice it.
Each worksheet is matched to the skills it practices, and this standard to the skills it asks for. Everything here shares at least one of them. All of it is free to print and use.
