First Grade Addition Timed Tests - Math Fact Fluency - Addition Within 20Use these first grade addition timed tests to help your students master addition math fact fluency within 20.These 28 unique printable worksheets are designed to help elementary age children learn addition facts focusing on numbers 1 through 20. There are 25 problems per worksheet. Each time, allow the children to complete the sheet and mark down the time. They love to beat their best time, and with practice, they will mee