Question

There are 69 students in a class. Due to some health issues, 22 students were absent. Estimate the number of students who attended school on that day to the nearest tens.

• A. 60
• B. 30
• C. 50
• D. 40

Answer 1

The correct option is C 50

Total number of students = 69

Number of students absent from school = 22

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 attending school = Total number of students – Number of students absent

= 69 – 22

Rounding the numbers to the nearest tens, we get:

= 70 – 20

Subtracting the rounded numbers, we get:
So, the estimated number of students who attended is 50.