Math Challenges: Adding and Subtracting with Number Lines

Lily has 15 apples. She gives 4 apples to her friend and then buys 10 more. How many apples does she have now?

• 15

• 10

• 21

• 25

Tom has 20 marbles. He loses 5 marbles and then finds 8 more. How many marbles does he have in total?

• 18

• 15

• 25

• 23

A baker made 30 cookies. He sold 12 cookies in the morning and baked 18 more in the afternoon. How many cookies does he have now?

• 42

• 30

• 24

• 36

Sarah has 25 stickers. She gives 7 stickers to her brother and then receives 10 stickers from her friend. How many stickers does she have left?

• 28

• 18

• 15

• 20

In a classroom, there are 18 boys and 22 girls. If 5 boys leave the class, how many students are left in total?

• 35

• 34

• 36

• 30

A farmer has 50 chickens. He sells 15 chickens and then buys 10 more. How many chickens does he have now?

• 45

• 35

• 40

• 55

Emma read 12 books in January and 15 books in February. If she gives away 5 books, how many books does she have left?

• 22

• 30

• 20

• 25

A toy store had 40 toys. They sold 15 toys and then received a shipment of 25 new toys. How many toys are in the store now?

• 50

• 60

• 40

• 30

Jack has 60 candies. He eats 20 candies and then buys 30 more. How many candies does he have now?

• 100

• 70

• 80

• 50

A library has 100 books. If 25 books are checked out and 15 new books are added, how many books are in the library now?

• 75

• 85

• 100

• 90