Question

There were 39 pencils in the drawer. If 19 more pencils were added to it. There are nearly pencils in the drawer.

• A. 40
• B. 50
• C. 60
• D. 70

Answer 1

The correct option is C 60

​​​​​The total number of pencils in the drawer is $39+19.$

But, this sum is best estimated by the sum $40+20=60.$

$3940\underset{–}{19}+\to \underset{–}{20}+\underset{–}{58}\underset{–}{60}$

Thus, there are nearly 60 pencils in the drawer.

$39+19=58$ is indeed close to 60.