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Math ยท Grade 1 Math

Chapter 6: Measuring Length and Reading Data

Putting Three in Order

Shortest, middle, longest.

Lesson
3
Time
About 10 minutes
0 of 5 done

Step 1: Let's Learn

Read it, or press Listen and follow the words.

Compare two at a time. Find the shortest first.

Then compare the two that are left.

Do it two at a time

Find the shortest, put it down, then the shortest of what is left. Three-way comparison is just easy two-way ones in a row.

The middle one is both

It is longer than one and shorter than another at the same time. Longer always needs something to be longer than.

Step 2: Try It Yourself

Tap and try it out.

Change the lengths and work out the order each time.
Pencil
Crayon
Ruler

Step 3: Watch an Example

One step at a time.

Watch Mia Put Them in Order

Mia has a 4-cube pencil, a 7-cube crayon and a 9-cube ruler.

  1. Step 1

    She finds the shortest first: the pencil at 4.

Step 4: Your Turn

Practice makes it stick.

Three Ribbons

Problem 1 of 1

Ribbons are 6, 3 and 9 cubes long. How long is the shortest one?

Shortest and Longest

Read the numbers carefully.

1 of 2

Sticks are 5, 8 and 2 cubes. How long is the longest?

2 of 2

Straws are 7, 4 and 6 cubes. How long is the shortest?

Step 5: Quick Check

Show what you know.

Question 1 of 2

Ropes are 3, 9 and 6 cubes. How long is the longest?

Question 2 of 2

How much longer is a 9-cube rope than a 3-cube one?

What You Learned

  • Compare two at a time.
  • Find the shortest, then order the rest.
  • Shortest, middle, longest.