Partition tens and ones

Home learning focus

Learn how to partition numbers into tens and ones using a place value chart and a part-whole model.

This lesson includes:

  • one video
  • three activities

Learn

First, watch this video below from BBC Bitesize for a reminder about tens and ones.

Partitioning into tens and one

Here are some numbers under 100. Can you partition them into tens and ones?

43, 61, 89, 35

Let’s see how many tens and ones are in each number. We can use a place value chart to help us.

43 has 4 tens and 3 ones.

61 has 6 tens and 1 one.

89 has 8 tens and 9 ones.

35 has 3 tens and 5 ones.

Part-whole diagrams

You can also use a part-whole diagram to show the tens and ones in each number.

Let's look at the same numbers again, but this time let's represent them using a part whole diagram.

Now let's try some more examples.

Which number has 5 tens and 4 ones?

5 tens and 4 ones = 54

Which number has 3 tens and 8 ones?

3 tens and 8 ones = 38

Which number has 7 tens and 0 ones?

7 tens and 0 ones = 70

Practise

Activity 1

Practise partitioning numbers into tens and ones.

In 17 sweets, there are 1 ten and 7 ones.

In 23 apples, there are 2 tens and 3 ones.

Remember that numbers up to 100 can be partitioned into tens and ones.

The first digit is the tens and the last digit is the ones.

Activity 2

Have a go at this worksheet from Twinkl. You can print it out or just make a note of your answers on a sheet of paper.

Tens and ones

Click here for the answer sheet.

Activity 3

Have a go at this interactive activity by Pearson.

Tens & ones - partitioning

Click here for the answer sheet.

There's more to learn

Have a look at these other resources around the BBC and the web.

1st level Maths and Numeracy
BBC Bitesize Daily
Primary games
5 - 7 Maths
Game - Karate Cats Maths
Numbertime
audio