Multiplication
Missing-factor multiplication
Find an unknown first or second factor from a known factor and product, using a selectable blank symbol.
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Missing factors in different formats
Solve missing-factor equations with the product on either side of the equals sign and either factor hidden.
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Read the complete equation first. Identify the product and known factor, divide to find the blank, and verify the finished equation.
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Learning objective
What this activity builds
Identify factors and products by their relationships rather than by a fixed position on the page.
Worked example
Complete 72 = □ × 9.
8
The product is 72 and one factor is 9. Since 72 ÷ 9 = 8, the equation is 72 = 8 × 9.
Teaching notes
Make the practice count
- Rewrite a product-first item in standard order without changing its values.
- Ask for the matching division equation as a check.
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