A missing factor is the unknown number in a multiplication equation, such as or ; it represents the number in each group or the number of equal groups, depending on its position. The relationship between multiplication and division allows the unknown factor to be found and checked using a related fact, array, or equal-groups model, within products up to 100; symbolic algebra and larger-number generalizations are not included.
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Detailed Explanation: Find a missing factor
A missing factor is the number that makes a multiplication equation true.
When one factor is missing, use division to find it because multiplication and division are related.
Example:
- Read the problem: We need to find the number that, when multiplied by , equals .
- Use the related division fact:
- Write in the box:
- Check your answer by multiplying. Since groups of make , the missing factor is .
Learn by doing: Find a missing factor
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Practice:
Multiplication - Balance Equation - One Digit, Two Factors
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This Worksheet Includes:
- Multiplication - Balance Equation - One Digit, Two Factors
- Multiplication - Missing Value, 2 x 1 Digit
- Linear Equation - Solve for Box, Two Terms
- Linear Equation - Solve for Box, Two Terms, Simple Display
- Division - Missing Value, Division 2 x 1 Digit
- Multiplication Factor Pair - 1 Digit
- Multiplication Cards Model - Hand Size and Player Count to Deck (1 Digit)
- Fact Family - Multiplication - Triangle to Fact
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