Question

There are 159 bottles in a carton. Estimate the number of bottles by rounding it off to the nearest hundreds.

Answer 1

For rounding off 159 to the nearest hundreds:
$\bullet$ 1 is the rounding digit.
$\bullet$ 5 is the digit to the right of the rounding digit.
$\bullet$ The value of the digit to the right is equal to 5, hence we add 1 to the rounding digit.
$\bullet$ We get $1+1=2$.
$\bullet$ The other digits to the right of the rounding digit change to zero.
$\bullet$ 159 rounded off to the nearest hundreds is 200.

Option D is the correct answer.