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Third/Subtraction

Missing Number Subtraction to 10

Quick practice for missing-number subtraction problems within 0–10 to strengthen basic subtraction fluency.
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Missing Number Subtraction to 10 preview

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Prerequisites
Basic Subtraction Facts 0-1013 WS
6 - 2 = ____
What to Do Next
Subtract Teen Numbers11 WS
18 - 11 = ____

Practice Questions

  1. ? - 5 = 2
    Show answer

    7

  2. 7 - ? = 2
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    5

  3. ? - 3 = 1
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    4

  4. 6 - ? = 1
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    5

  5. ? - 4 = 0
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    4

Teacher Resources
Lesson Plan

Basic Subtraction Strategies

Standards
1.OA.C.6
Printable Aids
Number Line 0-20Subtraction Flashcards
Teaching Notes

Emphasize using inverse operations (addition) and fact families to find the missing number. Encourage drawing models or using manipulatives initially.

Vocabulary
Missing number: A number that is not shown.
Equation: A math sentence with an equals sign.
Common Mistakes
  • Confusing the roles of the minuend, subtrahend, and difference when the missing number is not the difference.
  • Basic subtraction fact errors.
  • Not understanding that subtraction can be thought of as finding a missing part.
Differentiation
SupportUse a number line or ten-frames to visualize the problem. Provide partially filled number bonds or fact triangles to guide them.
ChallengeChallenge students to create their own missing number subtraction problems within 10, or explain their strategy for solving the problems.
Discussion Questions
  • How does knowing your addition facts help you solve subtraction problems with a missing number?
  • Can you think of a real-life situation where you would need to find a missing number in a subtraction problem?
  • What strategies did you use to find the missing number when it was the first number in the equation?
Extension Activities
  • Create missing number problems.
  • Use fact families.
  • Draw pictures to solve.
Parent Tip

Use a number line to help find missing numbers in subtraction.

Learning Path
Skill Cluster

Number Sense & Operations

Grade Level

1-2

Skills Practiced
Missing number subtractionFact familiesInverse operations