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This Fractured Subtraction assessment also includes:
Can you spare a 10? Scholars determine digits that could complete a two-digit subtraction problem. They must find all possible combinations of digits and provide an explanation for their reasoning.
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Instructional Ideas
- Challenge learners to develop their own fractured subtraction problems
Classroom Considerations
- Pupils should be comfortable with two-digit subtraction using the standard algorithm
- While the task is designed for middle school, you could easily use it at the elementary level
Pros
- Answer key lists all possible outcomes
- Simple task requiring higher-level thinking skills
Cons
- Rubric indicates one or two points for the partial level, but it does not explain how to award points