Mastering One Variable Problems: Key Info & Reasonableness

Sarah has 15 apples. She gives some to her friend. Now she has 8 apples left. How many apples did she give away?

• 5

• 3

• 7

• 10

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

• $36

• $24

• $30

• $48

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?

• 20

• 15

• 5

• 10

Lily is baking cookies. She has 24 cookies and wants to pack them into boxes with 6 cookies each. How many boxes does she need?

• 5

• 4

• 3

• 6

A farmer has 100 meters of fencing. He wants to create a rectangular garden. If the length of the garden is 30 meters, what is the width?

• 25 meters

• 35 meters

• 20 meters

• 15 meters

Emma read 45 pages of her book on Monday and 30 pages on Tuesday. If her book has 150 pages, how many pages does she have left to read?

• 100 pages

• 75 pages

• 60 pages

• 90 pages

A toy costs $25. If you have $100, how many toys can you buy?

• 3

• 4

• 5

• 2

Jake has 60 stickers. He gives away some stickers to his friends and now has 22 left. How many stickers did he give away?

• 50

• 28

• 45

• 38

A pizza is cut into 8 slices. If you eat 3 slices, how many slices are left?

• 4 slices

• 5 slices

• 3 slices

• 6 slices

A school has 200 students. If 50 students are in the 5th grade, how many students are in other grades?

• 50

• 200

• 150

• 100