New
New
Year 1

Explain that the digits in the numbers 11 to 19 express quantity

I can explain that the digits in the numbers 11 to 19 express quantity.

New
New
Year 1

Explain that the digits in the numbers 11 to 19 express quantity

I can explain that the digits in the numbers 11 to 19 express quantity.

Share activities with pupils
Share function coming soon...

Lesson details

Key learning points

  1. The digits in the numbers 11-19 tell us about their value.
  2. The teen numbers are between 10 and 20
  3. The teen numbers can be represented as ten and a bit.
  4. We can say there is one ten and --- ones.

Common misconception

Pupils confuse e.g. 18 and 80 because they sound similar.

Take time to emphasise the pronunciation of the teen numbers and provide lots of opportunities for pupils to say and repeat the words. You may wish to practise the teen and decade numbers side by side so pupils can hear the difference.

Keywords

  • Teen numbers - A number made of a ten (a group of 10 ones) and some additional ones.

  • Tens - A ten is a group of 10 ones.

  • Ones - Individual objects, grouped in ones.

One key aspect in this lesson is the concept of a group of 10 and that a teen number can be partitioned into a ten and some additional ones. Ensure they have lots of practical experience in making and grouping 1 ten using a range of manipulatives.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Video

Loading...

6 Questions

Q1.
What number comes next in the count? 6, 7, 8, 9 .
Correct Answer: 10, ten
Q2.
What number is missing in this sequence? 6, 7, 8, 9, 10, , 12
Correct Answer: 11, eleven
Q3.
How many apples are there?
An image in a quiz
Correct Answer: 6, six
Q4.
How many oranges are there?
An image in a quiz
10
Correct answer: 9
8
Q5.
Jun and Sofia are counting the pencils. Who is correct?
An image in a quiz
Correct answer: Sofia says, "I think there are fewer than 10 pencils."
Jun says, "I think there are more than 10 pencils."
Q6.
How many pencils are there?
An image in a quiz
Correct Answer: 7, seven

6 Questions

Q1.
Which of these statements about teen numbers is correct?
The teen numbers come between 0 and 10
Correct answer: The teen numbers come between 10 and 20
The teen numbers come between 20 and 30
Q2.
How many apples are shown here?
An image in a quiz
Correct Answer: 11, eleven
Q3.
How many pencils are shown here?
An image in a quiz
Correct Answer: 14, fourteen
Q4.
Which numeral represents a teen number?
Correct answer: 11
Correct answer: 15
Correct answer: 17
51
Q5.
Which place value chart represents the oranges?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q6.
Which place value chart represents the pencils?
An image in a quiz
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz