Free Printable Metric Conversion Worksheets for Grade 3

Third graders begin to solve one-step problems involving metric units. The focus shifts to liquid volume (liters and milliliters) and mass (grams and kilograms). While they may not perform complex decimal conversions, they start to understand and apply the relationships between these common units in practical contexts.

Use two-column tables to make the relationship explicit. For example, create a table with a "Kilograms" column (1, 2, 3) and a "Grams" column (1000, 2000, 3000). This visual pattern helps students see the multiplicative relationship before they tackle more abstract conversions.

These worksheets focus on solving one-step word problems that involve adding, subtracting, multiplying, or dividing metric units of mass and volume. For example, a problem might ask for the total volume of two liquids or the remaining mass after a portion is removed.

A student truly understands the concepts when they can read a word problem involving mass or volume and correctly determine which operation is needed to solve it. This demonstrates that they grasp the relationship between the units and can apply it in a problem-solving context.

All worksheets are available as printable PDFs. After your students complete the paper worksheet, you can grade their submissions quickly by scanning them with the Wayground for Teachers app. Each worksheet also includes a complete answer key for manual grading.

This topic directly supports the Common Core's major work for third grade, which includes solving real-world problems involving measurement of liquid volumes and masses. Mastering these skills is essential for building the number sense and proportional reasoning needed for later grades.