Question

Gena wants to estimate the quotient of –21.87 divided by 4.79. Which expression shows the best expression to estimate the quotient using front-end estimation?

Answer 1

You haven't shared the list of expressions from which you are to choose an answer.

However:  you can perform this estimation yourself as follows:

Round off both -21.87 and 4.79.  -21.87 goes to -22 and 4.79 to 5.  Then
a good estimate of -21.87 divided by 4.79 would be -22/5, or -4.4.

Answer 2

Answer:

$\frac{-22}{5}=-4.4$

Step-by-step explanation:

A good estimation always starts from the nearest whole numbers. This is a front-end for we maintain one number, -22 for the -21.87 and 5 and we place zeros to the right of it.

$-21.87\approx-22\\4.79\approx 5$

Since -21.87 is closer to -22.00, and 4.79 is closer to 5.00

Then

$\\\frac{-21.87}{4.79}=-4.56 \\\frac{-22}{5}=-4.4$

So, We can see that from 0.16 our estimative was quite close.