Grade 1 measurement worksheets: Measuring lengths with a ruler | K5 ... Measuring lengths with a ruler Using a ruler (inches) In these grade 1 math worksheets, students use a ruler to measure the length of pictured objects; students can use a real ruler or the cutout ruler on the worksheet. Worksheet #1 Worksheet #2 Worksheet #3 Similar: Measure lengths in inches Measure lengths with a ruler (cm)