New
New
Year 2

Compare two-digit numbers

I can compare two-digit numbers.

New
New
Year 2

Compare two-digit numbers

I can compare two-digit numbers.

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Lesson details

Key learning points

  1. When comparing two-digit numbers, the number of tens can be compared to find the greater number.
  2. When the tens in the numbers are the same, the greater number can be found by comparing the number of ones.
  3. The greater number can also be found using a number line.
  4. The greater number comes further in the counting sequence, so it will be further along the number line.

Keywords

  • Compare - You compare to find out what is the same and what is different. You can compare numbers to find out if one is greater than or less than another.

  • Greater than - Is larger in value or size.

  • Less than - Is smaller in value or size, referring to an abstract or continuous number.

Common misconception

Children may think that they must see both the tens and ones in a two-digit number to compare them. They may also reverse the tens and ones and compare the ones first.

Ensure that numbers with the ones digit hidden are given to compare so that children can appreciate the relative size of the numbers. Use practical equipment and stem sentences to consolidate understanding of the structure of two-digit numbers.

Ensure that the children can confidently identify and represent two-digit numbers based on cardinality (e.g. base 10) and ordinality (e.g. number lines/Gattegno charts), as these skills underpin the work in this lesson.
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).

Lesson video

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6 Questions

Q1.
Which of the following has more tens than 80?
50
70
Correct answer: 90
Q2.
When counting, which decade would you say last?
The forties
The thirties
Correct answer: The fifties
Q3.
I’m thinking of a number. It is in the seventies, and it has 6 ones. My number is
Correct Answer: 76
Q4.
Put these numbers in the order you would say if counting forwards. 74, 76, 75, 73
1 - 73
2 - 74
3 - 75
4 - 76
Q5.
Use the correct symbol <, > or = to complete the following correctly. 7 ___ 9
>
Correct answer: <
=
Q6.
Which of the following is the missing number. 60 > ___
90
70
Correct answer: 40

6 Questions

Q1.
Which of these numbers is greater than 54?
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q2.
34 < 67 Which of these numbers will be further along the number line?
34
Correct answer: 67
Q3.
Complete the stem sentence. I know 68 is less than 82 because __________
it is further along the number line.
Correct answer: it is not as far along the number line.
it has more tens.
Correct answer: it has fewer tens.
Q4.
Which of these numbers is less than 62?
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q5.
Fill in the missing number. Which of the following could be the missing number? ___ > 85
58
Correct answer: 95
83
Q6.
Which of the following is incorrect?
45 < 54
36 > 32
Correct answer: 28 > 72