This NUMBER ESTIMATION project contains a cover sheet and five worksheets. The worksheets are suitable for 3rd, 4th and 5th grade students that need practice in rounding and estimating numbers. The worksheet would make great homework activities as well as in class work and at Math Centers. The entire project maybe given to students to keep in their Math folders. This project was designed using Microsoft Word. The Number People on cover was purchased from Maureen Kinney's TPT store.