Question

Which of the following friends is correct?
Friend A: 73 rounded off to the nearest tens is 70.
Friend B: 567 rounded off to the nearest hundreds is 500.

• A. A
• B. Neither A nor B
• C. B
• D. Both A and B

Answer 1

The correct option is A A

We start by representing 73 and 567 by drawing a hill.
$\bullet$ 73 is rounded off to the nearest tens.
$\to$ Since 73 lies between 70 and 80, we will mark 70 at one end of the foot of the hill and 80 on the right foot.


$\to$ 73 falls on the left side of 75 and is closer to 70.
$\to$ So, 73 rounded off to the nearest tens is 70.
$\to$ Hence, friend A is correct.

$\bullet$ 567 is rounded off to the nearest hundreds.
$\to$ Since 567 lies between 500 and 600, we will mark on the hill as follows.


$\to$ 567 falls on the right side of 550 and is closer to 600.
$\to$ So, 567 rounded off to the nearest hundreds is 600.
$\to$ Hence, friend B is incorrect.

Option B is the correct answer.