Question

In complete sentences, explain the following: Is 700 a good estimate for the sum of 435 and 368? If it is, explain why it is a good estimate. If it is not, explain why it is a bad estimate.

Answer 1

`\boxed{\sf It \ is \ not \ a \ good \ estimate}`

Step-by-step explanation:

700 is not a good estimate for the sum of 435 and 368.

Round the numbers to nearest hundreds.

`435 \approx 400`

`368 \approx 400`

Let’s add the estimated numbers.

`400+400=800`

800 is a good estimate for the sum of 435 and 368.

Answer 2

700 is not at all a good estimate for the sum of 435 and 368.

Step-by-step explanation:

435 + 368 = 803

Round off each of the no.s

435 ≈ 400 (nearest hundreds)

368 ≈ 400 (nearest hundreds)

So,

400+400 = 800

Also, 803 ≈ 800 and not 700

So,

700 is not at all a good estimate for the sum of 435 and 368.