19.2 Compare Customary Units of Length

19.2 Compare Customary Units of Length

I can represent and compare measurements given in feet and inches, feet and yards, and inches and yards.

Spark your learning

In the seated position, this monkey puppet is 12 inches tall. The height of the chair is 3 feet. How do these heights compare? How many times as big is the chair than the monkey?

Our next problem is going to work with this scenario:

Carlo has 6 erasers. Each eraser is 2 inches long. He has a book that is 1 foot long. He can place the erasers end to end to equal the length of the book.

Fill in the Blank

Suppose one square tile is 1 inch long. How many square tiles can you use to represent the length of 1 eraser?

It would take two tiles!

The length of 1 eraser is 2 inches. Since each square tile is 1 inch long, 2 square tiles represent the length of 1 eraser.

Fill in the Blank

If a square tile still equals one inch and the textbook is one foot long, how many square tiles can you use to represent the length of the book?

We can use 12 tiles!

Since 2 square tiles represent the length of 1 eraser, 12 square tiles represent the length of 6 erasers placed end to end, which is equal to the length of the book. 12 square tiles represent the length of the book.

Open Ended

What observation can you make about measurements for the length of the erasers placed end to end and the length of the book?

Fill in the Blank

How many inches are in 1 foot?

It's 12!

The length of 6 erasers placed end to end is 12 inches. The length of the book is 1 foot. Since the lengths are the same, 12 inches is equal to 1 foot.

Our next problem deals with this scenario

Jessica needs 56 inches of ribbon to decorate her room. She buys this roll of ribbon. How can she determine whether she has enough ribbon to decorate her room?

Help me complete this table:

• 2 feet = 24 inches

• 3 feet = 36 inches

• 4 feet = 48 inches

• 5 feet = 60 inches

Fill in the Blank

So if Jessica has 5 feet of ribbon, how many inches of ribbon does Jessica have?

Our last problem deals with this scenario

A table is 1 yard 6 inches wide. This aquarium is 37 inches long. Will the aquarium fit on the table?

What is a yard?

A yard (yd) is a customary unit of length or distance. One yard is equal to 3 feet.

Fill in the Blank

How many inches are in a yard?

Fill in the Blank

How many inches are in 1 yard 6 inches?

Multiple Choice

1 yard 6 inches _____ 37 inches

• >

• <

• =

Multiple Choice

Will the aquarium fit on the table?

• Yes

• No