Question

In an examination, 165 students passed and 128 students failed. Estimate the total number of students that appeared for the examination to the nearest hundreds.

• A. 280
• B. 300
• C. 400
• D. 270

Answer 1

The correct option is B 300

Number of students who passed in the examination = 165

Number of students who failed in the examination = 128

Estimating follows the given rules:

i. If the deciding digit < 5, then round down.

ii. If the deciding digit > 5, then round up.

iii. If the deciding digit = 5, then round up.

Number of students who appeared for examination = Sum of students who passed and failed in the examination

= 165 + 128

Rounding the numbers to the nearest tens, we get:

= 200 + 100

Adding the rounded numbers, we get:
So, the total estimated number of students that appeared for the examination is 300.