Free Printable Size Comparison Worksheets for Grade 3

In Grade 3, comparison moves beyond just length. The curriculum expands to include mass (grams, kilograms) and liquid volume (liters). The core skill remains the same—comparing attributes—but it's now applied to these new, more abstract concepts.

Worksheets for Grade 3 feature a variety of problems. Students will read scales and beakers to determine mass and volume, solve one-step word problems comparing two measurements (e.g., 'How much heavier is the apple than the grape?'), and estimate whether an object should be measured in grams or kilograms.

Students often confuse mass with size. A classic misconception is believing a large object is always heavier than a small one. Use a demonstration comparing a large, light object (like a balloon) with a small, heavy one (like a rock) to directly challenge this idea and separate the concepts of volume and mass.

These worksheets are versatile. Print the PDF for a focused, in-class practice session or a homework assignment. For a quick formative assessment, assign the worksheet as a digital quiz on Wayground to get immediate data. A full answer key is provided for easy grading in either scenario.

This directly aligns with the Common Core's Measurement & Data domain for Grade 3. The standards require students to measure and estimate liquid volumes and masses of objects using standard units (grams, kilograms, and liters). Students also begin to represent measurement data on scaled bar graphs and line plots.

For students with reading challenges, use Wayground's 'Read Aloud' feature on digital assignments to ensure they can access the math content. For paper worksheets, you can pre-highlight key vocabulary and numbers, or provide a visual glossary with pictures of beakers and scales to help them decode the problems.