When would you do multiplication on the floor? When you have no tables. Scholars determine a possible set of digits that would complete a 2-digit by 1-digit multiplication problem. They then determine all possible sets of digits and provide a reason for their answer.

Concepts

multiplication, multiplication multiple digits

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Additional Tags

math

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Instructional Ideas

• Challenge learners to develop their own fractured multiplication problem

Classroom Considerations

• Pupils must be able to multiply using the standard algorithm
• While designed for middle school, the task would likely be more appropriate for elementary school
• The sixth in a series of 24 related resources

Pros

• Includes a complete answer key
• Contains descriptions for partial and full credit on the rubric

Cons

• Rubric does not distinguish between one and two points