Challenge mathematicians to show what they know with a worksheet all about factoring. Scholars factor seven given numbers to identify which of the variety of choices does not belong. 

Concepts

factors, numbers

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Additional Tags

math

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Instructional Ideas

• Invite pupils to cross out numbers using a colored pencil to better see the answer 
• Review answers as a class or in small groups, think out loud to demonstrate how to solve difficult problems
• Complete one circle a day over as a warm-up to math instruction 

Classroom Considerations

• Requires copies
• Assumes learners know how to factor numbers 
• The worksheet is the fourth resources in a series of eight created for substitute use in a fourth grade class   

Pros

• Highlights numbers in questions with bold font and a box 
• Large circles separates individual questions 

Cons

• None

Common Core

4.OA.B.4