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## 3rd grade foundations (Eureka Math/EngageNY)

### Course: 3rd grade foundations (Eureka Math/EngageNY) >Unit 2

Lesson 1: Topic A: Foundations

# Measuring lengths with different units

Use different units to measure the same object.

## Measuring lengths with different units

Let's measure a fence with squirrels!
The fence is 10 squirrels long.
Now let's measure the same fence with ponies.
The fence is 5 ponies long.
Why did it take fewer ponies to measure the length of the fence?

### Practice problem 1

This is a rectangle.
Let's measure the start color #11accd, start text, b, l, u, e, space, l, i, n, e, end text, end color #11accd below using both rectangles and a centimeter ruler:
The line is
rectangles long.

The line is
centimeters long.

The width of each rectangle is _____ than a centimeter.

So, it takes _____ rectangles than centimeters to measure the line.

### Practice problem 2

Measure the start color #1fab54, start text, g, r, e, e, n, space, l, i, n, e, end text, end color #1fab54 using the centimeter ruler.
The line is
centimeters long.

Now, measure the start color #1fab54, start text, g, r, e, e, n, space, l, i, n, e, end text, end color #1fab54 using the inch ruler.
The line is
inches long.

It takes _____ centimeters than inches to measure the line.

So, a centimeter is _____ than an inch.

### Challenge question

Raj measures the height of a desk with his pencil. He finds out the desk is 8 pencils tall. Lynn measures the same desk with her pen. The desk is 9 pens high.
Which is longer?

## Want to join the conversation?

• On practice problem one, why did it ask about the width of the rectangle when it should've asked the length. Clearly the width was the same as a centimeter, and the length was shorter. When I answered shorter it said correct.
• The width is on the bottom, the length is on the side, that is why it is width
• If Lynn measured and a desk was 9 pens long and Raj's was only 8 why was Raj's longer
• I don't know why and I agree, why are Raj's pencils longer when there was more pens then pencils?
• for the first one under practice problem 1 is the ruler in inches or centimeters?
• The ruler is measured in centimetres.
(1 vote)
• What's the smallest measurement unit?
• it takes some time l guess and then if you try a lot we will get it!
• 6yonn
what is 90+576858
• Why is Pluto not a planet anymore
• But It is rumored that It might be a planet again
• what are units?
• In measuring that would be metric units, and the other ones. But as a word that is different topics basically.