Help students recognise when a mental strategy is more efficient than a vertical algorithm with these mental strategy or algorithm worksheets for subtraction. Students solve each problem, showing their working, then identify whether they used a mental strategy or an algorithm to reach the answer, applying the same thinking to a word problem and explaining why they chose that method.
What's included:
3 differentiated worksheets: one where students solve using a given method for each problem, and two where students choose and identify their own method
Answer keys included