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Lesson 6 of 15
New
New
- Year 3
Ordering sets of 3-digit numbers
I can order a set of 3-digit numbers.
Lesson details
Key learning points
- If the 100s digits are different, the numbers can be compared or ordered by looking at the 100s digit.
- If the 100s digits are the same, the numbers can be compared or ordered by looking at the 10s digit.
- If the 100s and 10s digits are the same, the numbers can be compared or ordered by looking at the 1s digit.
Keywords
Compare - You compare to find out what is the same and what is different. You compare numbers to find out if one is more than or less than another.
Order - You can order numbers from the smallest to the largest or from the largest to the smallest.
Common misconception
Pupils may look at all the digits at once when ordering numbers and this may lead to mistakes.
When ordering 3-digit numbers, encourage pupils to compare the 100s digits first and then the 10s digits (and the 1s) afterwards.
Number cards (from 0-9) will be useful for pupils in this lesson. They also need to be familiar with the 'less than' and 'greater than' symbols as these are used throughout the lesson.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), 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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Prior knowledge starter quiz
6 Questions
Q1.Which number is larger: 289 or 298?
Which number is larger: 289 or 298?
289
Q2.Order these numbers, starting with the smallest.
Order these numbers, starting with the smallest.
Q3.Which of the numbers below could be used to make this inequality correct?
Which of the numbers below could be used to make this inequality correct?
196
216
Q4.Which of the numbers below could be used to make this inequality correct?
Which of the numbers below could be used to make this inequality correct?
310
Q5.Use the number cards to make a number greater than 951
Use the number cards to make a number greater than 951
Q6.Which number is greater than 491 and less than 507?
Which number is greater than 491 and less than 507?
489
508
510
Assessment exit quiz
6 Questions
Q1.Match the symbol to their meaning.
Match the symbol to their meaning.
Q2.Order these numbers, starting with the smallest.
Order these numbers, starting with the smallest.
Q3.Which number could be used to make this correct?
Which number could be used to make this correct?
288
311
320
Q4.Which number is greater than 567 and less than 580?
Which number is greater than 567 and less than 580?
517
565
670
Q5.Rearrange the number cards to make this correct.
Rearrange the number cards to make this correct.
Q6.One of the numbers in the inequality below has a missing digit. Which digit could you use to make the statement correct?
One of the numbers in the inequality below has a missing digit. Which digit could you use to make the statement correct?
1
