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

Answer:

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

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

Answer:

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

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.