William Luders

Create an infinite number of worksheets! Just open the file and you have 9 problems that require regrouping...WITH A KEY. Close and re-open and you have a different set of practice items! Look for my 2-, 4-, 5-, and even 6- digit practice sheets. THANKS FOR USING!

The key to effective estimation is the ability to round mentally. This is a prerequisite skill for all estimation. This quick administered quick scored exercise is a perfect way to assess and/or help students understand the simplicity. They are to each number to the "front-end place". That is a mathematical term for the highest place-value place. No pencil calculation should be necessary, easy-to-cut answer templates are provided, as well as a quick-score quiz. Please check out all of my wor