# How do you estimate #4975 times 78# by rounding?

Now, mentally multiply 5,000 by 80 to get a product of 400,000. Round 4,975 to 5,000 and 78 to 80.

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To estimate $4975 \times 78$ by rounding, you can round each number to the nearest multiple of 10 or 100 and then perform the multiplication. For example, you can round $4975$ to $5000$ and $78$ to $80$. Then, multiply $5000 \times 80$ to get an estimate.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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