Math Problem

1. If there were 2341 trees and a person had to take 1254 tree . How many trees will be there now?
2. There are 1899 cars in the carpark. 4567 join in. How many cars are there now?
3. If there were 5 marbles and jeff gets another 5 marbles. How many marbles are there now?
4. There are 500 pencils joe come and take 47. How many pencils is there now?
5. 678 people are in a hotel 50 more join in. how many people are there altogether?
6. There are 67 cars 50 more join in. how many cars are there now?>
7. 56 kids are in the playground playing 67 more join in. how many kids are there now playing on the playground?
8. There are 50 kids at camp raglan. 40 of them have to go tomorrow. How many kids will be left at camp raglan?
9. 6  cars are in my house 4 of them have to go. How many cars do iI have in my house now?
10. 5 of my friends are in the coal bunker i am here alone I go and join them. How many of us are in the coal bunker now?