Question

Find the total number of students in all the grades.

• A. 23,120
• B. 24,120
• C. 24,100
• D. 24,020

Answer 1

The correct option is B 24,120


From the table, we see:
Number of smileys for Grade 3 = 8
Number of smileys for Grade 4 = 6
Number of smileys for Grade 5 = 6
Number of smileys for Grade 6 = 4

So, total number of smileys = 8 + 6 + 6 + 4 = 24

1 smiley represent 1005 students.

$\text{So, total number of children in all}$
$\text{grades}=24\times 1005$

Writing the higher number up and right-aligning them, we get:


So, the total number of children in all the grades = 24,120