Select the Odd One Out: Single Digit Subtraction

In this math-based critical thinking activity, students are shown three single-digit subtraction equations. Two of the equations have the same answer (difference), while one does not. Learners must analyze the problems and select the equation with a different result—the odd one out.

Key Features:

• Focused practice with single-digit subtraction

• Encourages mental math and comparison skills

• Simple tap-to-select interaction

• Builds number sense and problem-solving

Skills Practiced:

• Subtraction fluency

• Comparing numbers and differences

• Logical reasoning and attention to detail

• Math vocabulary: difference, equation, subtract

Ideal For:

• Kindergarten to Grade 2 learners

• Math centers and early numeracy lessons

• Skill reinforcement for struggling learners

• Quick checks for understanding