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Khan Academy
Khan Academy: Convert Units Word Problems (Us Customary)
Solve word problems that involve converting between US customary measures of distance, volume, and mass. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
California State University
Csudh: Chemistry: Density, Mass and Volume Homework
Practice your density, mass, and volume calculations with these interactive review problems.
Khan Academy
Khan Academy: Convert Units (Metrics)
Convert between metric measures of distance, volume, and mass. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.