Adding and Subtracting Masses Answer Key

Students calculate total and comparative weights by adding or subtracting masses given in grams or kilograms. Each problem provides realistic contexts, such as groceries, fruit, and packages, to illustrate how mass changes when combined or compared. Learners must convert units as needed and ensure consistent use of the metric system before solving. This activity strengthens arithmetic fluency, reasoning accuracy, and understanding of mass relationships. It also builds problem-solving confidence and prepares students for multi-step real-world measurement applications.

Curriculum Matched Skills

Mathematics – Addition and Subtraction of Metric Measurements

Mathematics – Problem Solving with Real-World Contexts

Science – Applying Mass and Weight Concepts

Mathematics – Converting Between Units Consistently

This worksheet is part of our Weight & Mass collection.