Solving Missing Variables: Math Problem Context & Reasonableness

Sarah has 24 apples. She gives some to her friend. Now she has 15 apples left. How many apples did she give away?

• 18

• 9

• 5

• 12

A book costs $12. If you buy 3 books, how much do you spend in total? If you have $50, how much money will you have left?

• $14

• $36

• $30

• $22

Tom has a collection of 50 baseball cards. He wants to divide them equally among his 5 friends. How many cards will each friend get?

• 15

• 10

• 5

• 20

Lily bought 3 packs of stickers. Each pack has the same number of stickers. If she has 18 stickers in total, how many stickers are in each pack?

• 6

• 4

• 10

• 8

A pizza has 8 slices. If John eats 3 slices, how many slices are left? If he shares the remaining slices with 2 friends, how many slices will each person get?

• 1 slice each

• 2 slices each

• 1.67 slices each

• 3 slices each

In a classroom, there are 30 students. If 12 students are boys, how many girls are there?

• 15

• 25

• 20

• 18

A farmer has 100 eggs. He sells some and has 65 eggs left. How many eggs did he sell?

• 40

• 30

• 50

• 35

Emma has $45. She buys a toy for $18. How much money does she have left? If she wants to buy another toy that costs $15, will she have enough money?

• She will have $12 left after buying the second toy.

• Yes, she will have enough money.

• No, she will not have enough money.

• She will have $10 left after buying the first toy.

A car can travel 60 miles on a full tank of gas. If it has 3/4 of a tank left, how many miles can it still travel?

• 75 miles

• 60 miles

• 30 miles

• 45 miles

There are 40 cookies in a jar. If 15 cookies are eaten, how many cookies remain? If you want to share the remaining cookies equally among 5 friends, how many cookies will each friend get?

• 5

• 7

• 6

• 8