lesson

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Imagine a secret lock on a treasure chest that only opens if you can find the missing number in β‘Γ6=42.
The numbers you multiply together are called factors, and the total answer is called the product.
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What should you do when the missing box is at the very end of the equation?
Finding the Missing Product
When the empty box comes after the equals sign, like 6Γ7=β‘, you just multiply the two known factors together.
Think of this as 6 equal groups with 7 items in each group, which makes a total of 42.
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What happens when one of the factors is missing instead of the product?
Finding a Missing Factor with 6 and 7
To solve β‘Γ6=48, ask yourself: "How many groups of 6 fit into 48?"
You can skip count by 6 until you reach 48: 6, 12, 18, 24, 30, 36, 42, 48. That took 8 jumps, so the missing number is 8!
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