◂Math Worksheets and Study Guides Kindergarten. How long?
Coloring Worksheet
How long? 
Coloring Worksheet
How long? Worksheet/Answer key
Width & Length Worksheet/Answer key
Length
Coloring WorksheetWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Measurement and Data
Describe and compare measurable attributes.
Describe measurable attributes of objects such as length or weight. Describe several measurable attributes of a single object. [K-MD1]