I have created a rounding whole numbers unit. It has rounding to the nearest ten, hundred, and thousand. There are 2 pretests/posttests that have 10 questions each. All of them are word problems, but each test has 2 open ended questions and 8 multiple choice questions. Then there are 10 practice pages that each have 10 rounding questions to practice. The other 6 practice pages have 5 rounding word problems. Last, there are 4 mini quizzes that each have 5 open ended rounding word problems.
I teach 3rd grade in VA so this matches our SOL 3.1b rounding whole numbers up to the nearest thousand.