Solving Unknowns: Fun Math Challenges for Grade 3

Sarah has 12 apples. She gives some to her friend. Now she has 8 apples left. How many apples did she give away?

• 2

• 4

• 10

• 6

Tom has 15 marbles. He finds some more marbles and now has 20 marbles. How many marbles did he find?

• 5

• 7

• 3

• 10

A box contains 25 chocolates. If 10 chocolates are eaten, how many chocolates are left in the box?

• 10

• 15

• 20

• 5

Lily has 30 stickers. She gives away some stickers to her classmates. Now she has 22 stickers left. How many stickers did she give away?

• 8

• 5

• 10

• 12

There are 18 students in a class. If 5 students are absent, how many students are present?

• 15

• 10

• 13

• 8

A farmer has 50 cows. If he sells some cows and now has 35 cows left, how many cows did he sell?

• 10

• 20

• 25

• 15

Emma has 40 crayons. She loses some crayons and now has 28 crayons left. How many crayons did she lose?

• 15

• 20

• 12

• 10

In a garden, there are 60 flowers. If 15 flowers bloom, how many flowers are still not bloomed?

• 30

• 60

• 15

• 45

A library has 100 books. If 25 books are checked out, how many books are still in the library?

• 25

• 75

• 50

• 100

Jake has 45 toy cars. He gives some to his brother and now has 30 toy cars left. How many toy cars did he give to his brother?

• 25

• 10

• 15

• 20