Question

Which gives the best estimate and the exact product of (5.9)(8.28)? A: estimate: 40; exact product: 48.852

Answer 1

Answer:
B: estimate: 48; exact product: 48.852

Explanation:
First, let's get the exact product:
5.9 * 8.28 = 48.852

Ten, let's get the estimated product:
5.9 will be rounded up giving us 6
8.28 will be rounded down giving us 8
Now the estimated product = 6 * 8 = 48

Based on the above calculations, we have:
estimate : 48
exact : 48.825
This corresponds to option B

Hope this helps :)

Answer 2

I think B gives the best estimate and exact product because

1). 5.9 x 8.28 is very similar to 6 x 8 which equals 48.

and 

2. 5.9 x 8.28 = 48.852.

Hopefully that made sense. :)