Different sized groups

This task is about dividing by a factor of 10.

Question 1Change answer

Mani's school had 276 students. They wanted to put them into groups of 10 students.
How many groups had exactly 10 students? 
One group did not have enough students to make up 10. How many were in this group? 

Question 1Change answer

illustration: postage stamp
The Conservation group had 3,724 trees to plant. They want to plant them in groups.
How many groups of exactly 1,000 trees could they plant? 
 
How many groups of exactly 100 trees could they plant? 

Question 1Change answer

lots of people
 
A city had 74,138 people in it.
There is one library for every 10,000 people.
How many libraries are there? 
 
 
There is one bus for every 1,000 people.
How many buses are there?