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Comparing Object Lengths Worksheet

Students measure four everyday objects on an inch ruler, then use this comparing object lengths worksheet to find how many inches longer one object is than another. 2nd Grade, answer key included.

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About this resource

Description

Measuring is one of the first places where second graders see math describing the real world, and comparing two lengths is the step that turns a measurement into an answer. This comparing object lengths worksheet asks students to line an object up with an inch ruler, read the length at the far end, and then work out how much longer one object is than another. That last step is the heart of the standard: a length difference is not just a bigger number, it is an amount, and it has to be reported in the same unit both objects were measured in.

Part A of this 2nd grade measurement worksheet gives students four real objects — a paper clip, a paintbrush, a crayon, and a key — each printed at true size beside its own inch ruler. Students line the left end of the object up with the zero mark, read the length where the object ends, and write it in the box. Part B then turns those four measurements into three comparison sentences, including one that reaches across both rulers, so students have to look back at the answers they recorded rather than reread a single picture.

What’s Included

  • 1 print-ready PDF worksheet
  • Answer key
  • 4 ruler measuring activities and 3 length comparison sentences

Three things make this comparing object lengths worksheet stick. First, every object is drawn at actual size, so a child who lays a real ruler on the page gets the same answer the printed ruler gives, and measuring stops being a picture exercise. Second, the objects are everyday classroom items at believable lengths, which keeps the numbers honest and gives students something concrete to picture later. Third, the comparison sentences ask for the unit as well as the number, so three becomes three inches and the answer keeps its meaning.

Away from the page, hand students a ruler and send them hunting for something exactly four inches long, then for something two inches longer than that. Line crayons, pencils, and erasers up shortest to longest before measuring, and check afterward whether the order held. Ask students to measure one object twice, once starting at zero and once starting at the one-inch mark, and talk about why the second reading comes out wrong. Comparing measurements at home works just as well, since shoes, spoons, and library books all make good practice.

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