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

Tags

CCSS.2.OA.A.1

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

• 5

• 7

• 3

• 10

Tags

CCSS.2.OA.A.1

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

• 10

• 15

• 20

• 5

Tags

CCSS.2.OA.A.1

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

Tags

CCSS.2.OA.A.1

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

• 15

• 10

• 13

• 8

Tags

CCSS.2.OA.A.1

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

Tags

CCSS.2.OA.A.1

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

• 15

• 20

• 12

• 10

Tags

CCSS.2.OA.A.1

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

• 30

• 60

• 15

• 45

Tags

CCSS.2.OA.A.1

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

• 25

• 75

• 50

• 100

Tags

CCSS.2.OA.A.1

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

Tags

CCSS.2.OA.A.1