Question

Is 8,000 a good estimate for the sum of 3,816 and 467?

If it is, explain why it is a good estimate.If it is not, explain why it is a bad estimate.

Answer 1

No, 8000 is not a good estimate for the sum of 3816 + 487

We do the sum,

`3816 + 487 = 4283\\`

Now, since the correct answer is 4283, 8000 is a bad estimate of the sum.

Now, it is a bad estimate because it is very far from the correct answer, it is about 2 times away from the answer, for a good estimate, the estimate has to be close to the true value, in our case, a good estimate would be 4000