Basic Arithmetic and Word Problems

This lesson covers writing expressions where letters stand for numbers. It includes practical examples such as calculating ribbon lengths, comparing book counts, and solving problems involving water bottles, tape diagrams, distances, playlists, spending, and capacity. The lesson emphasizes using mathematical operations to solve real-world problems.

If a blue ribbon is 10 inches long, how long is the red ribbon?

• 3 inches

• 10 inches

• 17 inches

• 7 inches

If Tyler has 21 books, how many books does My have?

• 10 books

• 7 books

• 15 books

• 5 books

What does the expression 24 - x represent in the context of a water bottle?

• The weight of the bottle

• The amount of water in the bottle

• The total capacity of the bottle

• The portion of the bottle that is empty

Which operation is represented by the equation 9 + 9 + 9 = 27?

• Multiplication

• Subtraction

• Division

• Addition

How far is Lynn's house from school if it is 135 meters closer than Han's house, which is 450 meters away?

• 585 meters

• 450 meters

• 135 meters

• 315 meters

If Tyler's playlist has 36 songs, how many songs does Noah's playlist have if it is one quarter the size?

• 36 songs

• 27 songs

• 18 songs

• 9 songs

What percentage of a 50-gallon trash bin is filled if it contains 30 gallons?

• 60%

• 90%

• 50%

• 30%

If you spent 10% of $50 on clothes, how much did you spend?

• $15

• $10

• $20

• $5

What is the capacity percentage of a 50-gallon trash bin if it holds 45 gallons?

• 45%

• 75%

• 100%

• 90%

If 100 gallons is twice the capacity of a 50-gallon trash bin, what percentage does it represent?

• 200%

• 150%

• 100%

• 250%