This problem gives students practice in calculating with fractions, using factors and multiples, finding equivalent fractions, logical reasoning, and working systematically. Students use clues to determine the total number of discs in a game and the fraction represented by each color. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension and support, and a printable (pdf) worksheet of the problem.
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Contributed by: Millennium Mathematics Project, Publisher

Math TopicGeometry, Number Sense, Fractions, Basic Operations, Mathematical Practices, Mathematical Processes

Grade Level4, 5, 6+

Resource TypeActivity

**Additional Information**- AudienceLearner
- LanguageEnglish (United Kingdom)
- Education Topic
- Interdisciplinary Connection
- Professional DevelopmentNo
- ContributorMillennium Mathematics Project, Publisher
- Publication Date2009-06
- RightsCopyright (c) 2007 University of Cambridge

http://nrich.maths.org/public/terms.php - AccessFree access

**Standards**### Common Core State Standards for Mathematics