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Math · Grade 1 Math

Chapter 4: Teen Numbers and the Unit of Ten

Ten Ones Make One Ten

Bundle ten little ones into one big ten.

Lesson
1
Time
About 11 minutes
0 of 4 done

Step 1: Let's Learn

Read it, or press Listen and follow the words.

Counting lots of ones is slow. It is easy to lose your place.

Make them into one thing

Ten ones can be bundled into one ten. It is still the same amount.

Bundle means group ten ones into one ten.

Now you can count tens instead of ones. That is much faster.

Why bundling helps

Ten loose ones take ten counts. One bundle takes one look. Bundling trades counting for seeing.

The amount did not change

A bundle of ten and ten loose ones are the same quantity. Only how it is organised changed, which is the whole idea of place value.

Step 2: Try It Yourself

Make ten ones, then bundle them.

Set it to 10 or more, then tap Bundle. Watch the ones become a ten.

Tens

0

Ones

10

That is ten or more. Bundle them and see what happens.

Step 3: Watch an Example

One step at a time.

Watch Ben Bundle

Ben has 10 loose cubes.

  1. Step 1

    He counts them one by one. It takes a while.

Step 4: Your Turn

Practice makes it stick.

Pencil Pots

Problem 1 of 1

Mia has one full ten of pencils and no loose ones. How many pencils?

pencils

Bundle and Break

Bundle a ten, then break it apart again. The amount never changes.

Tens

0

Ones

12

That is ten or more. Bundle them and see what happens.

Step 5: Quick Check

Show what you know.

Question 1 of 2

How many ones are in one ten?

Question 2 of 2

You bundle ten ones. Do you have more, less, or the same?

What You Learned

  • Ten ones can be bundled into one ten.
  • It is still the same amount.
  • Counting tens is faster than counting ones.