Finding Unknowns in Everyday Word Problems for Grade 5

Maria has 15 apples. She gives some to her friend and now has 8 apples left. How many apples did she give away? (a + x = b)

• 3

• 7

• 10

• 5

A box contains 20 chocolates. If 5 chocolates are eaten, how many chocolates are left in the box? (a + x = b)

• 15

• 10

• 5

• 0

Tom has 12 marbles. He finds some more marbles and now has 20 marbles. How many marbles did he find? (a + x = b)

• 5

• 8

• 15

• 10

There are 30 students in a class. If 12 students are absent, how many students are present? (a + x = b)

• 25

• 15

• 20

• 18

A gardener planted 25 flowers. If he plants 10 more flowers, how many flowers will he have in total? (a + x = b)

• 35

• 40

• 30

• 20

Samantha read 18 pages of her book. If she wants to read a total of 50 pages, how many more pages does she need to read? (a + x = b)

• 32

• 15

• 40

• 25

A baker made 40 cookies. If he sells some and has 22 cookies left, how many cookies did he sell? (a + x = b)

• 18

• 30

• 25

• 15

Liam has 50 stickers. He gives away some stickers to his friends and now has 32 stickers left. How many stickers did he give away? (a + x = b)

• 25

• 5

• 18

• 10

A library has 100 books. If 25 books are checked out, how many books remain in the library? (a + x = b)

• 25

• 50

• 75

• 100

Ella has 45 dollars. She spends some money and now has 28 dollars left. How much money did she spend? (a + x = b)

• 10 dollars

• 17 dollars

• 25 dollars

• 5 dollars