Missing Factor: Table of 2 (292)
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Teacher Resources
Teaching Notes
Missing factor problems (2 x __ = 14) are the bridge to division. Encourage thinking 'How many 2s make 14?' or 'What did I double to get 14?'. This builds algebraic thinking. **Instruction Tips:** These worksheets focus on finding the missing factor in multiplication problems involving the table of 2, helping students strengthen their understanding of multiplication and division. **Worked Example:** 2 x __ = 18 worked example **Problem:** 2 x __ = 18 **Strategy:** Think of the multiplication table of 2 and find the number that gives 18 when multiplied by 2. **Hints:** - Use division to find the missing factor. **Steps:** - Divide 18 by 2 to find the missing factor.
Vocabulary
Common Mistakes
- Writing the product again (e.g., 2 x 28 = 14)
- Guessing without checking
- Confusing the operation (e.g., adding instead of finding the missing factor).
- Difficulty with basic multiplication facts for 2.
- Struggling to relate the missing factor to division.
Differentiation
Discussion Questions
- How is finding the missing number like solving a mystery?
- If I know the answer is even, does that help me?
- What is the relationship between this worksheet and division?
- How can skip counting help us find the missing number?
- What does 'missing factor' mean in a multiplication problem?
- How is this problem like division?
Extension Activities
- Mystery Bag: 'I have 14 items in pairs. How many pairs?'
- Write your own missing number puzzles.
- Flashcards with a hole punch for the missing number.
Parent Tip
Use objects and ask 'How many groups of 2 make X?'
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
15 minutes
Skills Practiced
Prerequisites
- 288
- Skip Counting by 2
- Repeated Addition
- Basic Multiplication for 2
Next Steps
- Division by 2
- Missing Factor: Table of 3
- Multiplication Fact Families
- Table of 3 - Missing Factor
- Division Facts for 2
- Multiplication & Division Fact Families