Question

Use the information in the table to solve each problem. Use estimation to check that the answers are reasonable. Answer parts a and b below.
Office Supplies
Paper clips
​ $1.79/pack
​Dry-erase markers
​ $3.50/pack
Tape
​ $2.89/roll
Staples
​ $3.49/pack
Paper
​ $3.69/pack
Question content area bottom
Part 1
a. How much more does 1 pack of staples cost than 1 roll of​ tape?
The difference between the prices is ​$3.49minus​$2.89equals​$
  
enter your response here. ​$3.49 is about
▼
$2.50,
$3,
$3.50,
and​ $2.89 is about
▼
$3.50.
$3.
$2.50.
​So, the estimated difference is about ​$
  
enter your response here. The answer
▼
is
is not
reasonable because ​$
  
enter your response here
▼
is not
is
close to the estimated difference of ​$
  
enter your response here.
​(Type integers or​ decimals.)

Answer 1

a. Exact difference: $3.49 − $2.89 = $0.60.

$3.49 is about $3.50, and $2.89 is about $3.00.
Estimated difference: $3.50 − $3.00 = $0.50.

The answer is reasonable because $0.60 is close to the estimated difference of $0.50.