10 seventh graders estimated they spent more ...
10 seventh graders estimated they spent more than an hour. 20 seventh graders estimated they spent less than an hour. 22 total students estimated they spent more than an hour. 36 total students estimated they spent less than an hour. fill in the missing values in the table below. social media more less total 7th grade 8th grade total
Answer
# Explanation:
## Step1: Fill 7th - grade 'More'
Given 10 seventh - graders spent more than an hour. So the value in 7th grade and 'More' cell is 10.
## Step2: Fill 7th - grade 'Less'
Given 20 seventh - graders spent less than an hour. So the value in 7th grade and 'Less' cell is 20.
## Step3: Fill 7th - grade 'Total'
Add the number of 7th - graders who spent more and less than an hour. $10 + 20=30$. So the value in 7th grade and 'Total' cell is 30.
## Step4: Fill 'Total' 'More'
Given 22 total students spent more than an hour. So the value in 'Total' and 'More' cell is 22.
## Step5: Fill 'Total' 'Less'
Given 36 total students spent less than an hour. So the value in 'Total' and 'Less' cell is 36.
## Step6: Fill 'Total' 'Total'
Add the total number of students who spent more and less than an hour. $22 + 36 = 58$. So the value in 'Total' and 'Total' cell is 58.
## Step7: Fill 8th - grade 'More'
Subtract the number of 7th - graders who spent more than an hour from the total number of students who spent more than an hour. $22-10 = 12$. So the value in 8th grade and 'More' cell is 12.
## Step8: Fill 8th - grade 'Less'
Subtract the number of 7th - graders who spent less than an hour from the total number of students who spent less than an hour. $36 - 20=16$. So the value in 8th grade and 'Less' cell is 16.
## Step9: Fill 8th - grade 'Total'
Add the number of 8th - graders who spent more and less than an hour. $12 + 16 = 28$. So the value in 8th grade and 'Total' cell is 28.
# Answer:
| Social Media | More | Less | Total |
| ---- | ---- | ---- | ---- |
| 7th grade | 10 | 20 | 30 |
| 8th grade | 12 | 16 | 28 |
| Total | 22 | 36 | 58 |