These 24 task cards include subtraction problems that require error analysis. Each card includes 2 student answers that your students need to "grade" and determine which answer is incorrect and explain why it is incorrect.
Addition problems include:
➙2 digit, 3 digit, and 4 digit subtraction without regrouping
➙2 digit, 3 digit and 4 digit subtraction with regrouping
➙3 digit and 4 digit subtraction across 0s.
➙Subtraction strategies: make a ten and make a hundred
➙Estimate to find the difference: round to the nearest 10 and nearest 100
See if your students understand addition well enough to look for others' mistakes. After getting into the habitat of looking for mistakes, hopefully students will learn the importance of double checking their own work.
Cards are available in color and a grayscale version
An answer key is provided.
Save money and buy the addition and subtraction bundle!
Find the Mistake: Addition and Subtraction Bundle
The Addition and Subtraction Bundle includes:
Find the Mistake: Addition
Find the Mistake: Subtraction
Find the Mistake: Addition and Subtraction Word Problems
Check out my other Find the Mistake Products
Find the Mistake Task Cards
Looking for other subtraction activities?
Work Work: Addition and Subtraction
Finding Unknown Numbers: Addition and Subtraction Worksheets
Addition and Subtraction: Solving for the Unknown Task Cards
♥ Julie from Llama with Class
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