Skip to lesson

Math · Kindergarten Math

Chapter 4: Taking Apart

Breaking a Number Apart

Five can be four and one, or three and two.

Lesson
2
Time
About 9 minutes
0 of 6 done

Step 1: Let's Learn

Read it, or press Listen and follow the words.

Five counters can be split into two groups in lots of different ways.

Some ways to split five

Four and one. Three and two. Five and none. Each is a true way to break five apart.

The whole stays the same

However you split them, there are still five counters. Moving them between groups does not create or destroy any.

One split, two facts

Three and two shows you 3 + 2 = 5 and also 5 − 3 = 2. The same picture answers both questions.

Why splitting is worth practising

Knowing the ways a number breaks apart is what makes bigger arithmetic quick later on.

Step 2: Try It Yourself

Move counters between the two trays.

Tap an apple to move it to the other tray. Find every way.
This tray
Tap one to move it across
That tray
Tap one to move it back

3 and 2 make 5.

Ways to make 5

0 of 6 found

  • ?
  • ?
  • ?
  • ?
  • ?
  • ?

Step 3: Watch an Example

One step at a time.

Watch Mia Split Five

Mia has five counters and two trays.

  1. Step 1

    She puts four in one tray and one in the other.

Step 4: Your Turn

Practice makes it stick.

Five Sweets

Problem 1 of 1

Five sweets in two hands. Three in one hand. How many in the other?

Split It Up

1 of 4

5 is 4 and how many?

2 of 4

6 is 2 and how many?

3 of 4

7 is 3 and how many?

4 of 4

4 is 4 and how many?

Step 5: Quick Check

Show what you know.

Question 1 of 1

8 is 5 and how many?

What You Learned

  • A number can be split into two parts many ways.
  • The whole stays the same.
  • Knowing the pairs makes adding easy.