Ali had 20 marbles and he gave 10 to his sister, Fatima. He then found 5 more marbles on the ground. He then lost 3 marbles. How many marbles does Ali have in total now?

There are 100 pennies in 1 dollar and 50 dollars in a bag. How many pennies are there in 3 bags?

Michael had 15 dollars and he spent 8 dollars on a book. He then earned 10 more dollars by helping his dad wash the car. He then spent 5 dollars on candy. How much money does Michael have in total now?

There are 1000 meters in a kilometer and 5 kilometers in a race. How many meters are there in 2 races?

Ahmed had 30 candies and he ate 15. He then bought 10 more candies. He then gave 5 candies to his friend, Michael. How many candies does Ahmed have in total now?

Sarah had 25 stickers and she shared them equally with her 5 friends. She then bought 3 more stickers. She then gave 5 stickers to her sister, David. How many stickers does Sarah have in total now?

There are 60 minutes in 1 hour and 24 hours in a day. How many minutes are there in a week?

Sarah had 10 cookies and she ate 5. She then gave 2 of the remaining cookies to her brother, David. How many cookies does Sarah have left?

There are 40 students in the school and they are divided into 8 groups. Each group then goes on a field trip to the zoo. After the field trip, 5 students leave the school. How many students are left in the school?

Mary had 50 pennies and she spent 20 on a lollipop. She then found 10 more pennies on the ground. She then gave 5 pennies to her friend, Ali. How many pennies does Mary have in total now?