Add and Subtract by 5's and 10's

David collects cards. If he has 45 and his brother gave him 5 more, how many cards does David have in total?

If there are 5 fishes and Tim buys 5 more, how many fishes does Tim have now?

Mrs. Taylor has 90 books in her classroom and she bought 5 more, how many books will Mrs. Taylor have in total?

Bob collects bikes, he has 5 bikes and he was given 5 more, how many bikes does Bob have in total?

Max bought 10 tacos and gave 5 to his sister, how many tacos did Max have left?

Sue has 90 pencils and she bought 10 more, how many pencils does she have in total?

There are 50 birds on the fence and 10 flew away, how many birds were left on the fence?

If Mark has 10 dogs and 5 ran away, how many dogs does Mark have left?

Lily picked 30 flowers and she lost 10, how many flowers did she have left?

Billy has 30 horses and he bought 10 more. How many horses does Billy have total?

Adam has 100 coins and he lost 10, how many coins does he have left?

Lulu has 15 pairs of shoes and she buys 5 more. How many pairs of shoes will Lulu have in total?

Ed has 30 fishes in his pond if his sister gave him 10 more, how many fishes will Ed have in total in his pond?

James has 5 toy trucks and he got 10 more for his birthday, how many toy trucks does James have now?

Sally has 10 pencils and she gave 5 to her sister. How many pencils does Sally have now?