Position 3-digit numbers on number lines
Lesson details
Learning outcome
I can position 3-digit numbers on number lines.
Key learning points
- Find the previous and next multiple of 10 or 100 to position numbers on a number line.
- The halfway steps can be used to help find the 5 or 50 numbers.
- Counting in steps of 1, 10 and 100 helps us to position a number on a number line.
Keywords
Represent - Represent means showing something, or standing for something.
3-digit number - A 3-digit number represents a number of hundreds, tens and ones.
Position - Position means where something is located.
Common misconception
Pupils may make errors using the halfway steps between numbers (e.g. wrongly label 374 as 379).
Encourage pupils to find and label the halfway steps (e.g. the 5 or the 50s numbers).
Teacher tip
Encourage the pupils to look at the steps between numbers and use counting to check theses. Are they counting in ones or tens?
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What number is represented by the arrow on this section of the number line?
Q2.Which of these are not 3-digit numbers?
Q3.What number is 10 less than 150?
Q4.Which number is halfway between 50 and 70?
Q5.Which of these numbers come between 140 and 160?
Q6.What number is Andeep thinking of?
Assessment exit quiz
6 Questions
Q1.What number is positioned halfway between 400 and 500?
Q2.What number is the arrow pointing to?
Q3.What number is the arrow pointing to?
Q4.Match the numbers to the labels on the number line.
Q5.Sofia is thinking of a 10s number that could be represented on this number line. The digits of the number add up to 11. What is the number?
Q6.Andeep is thinking of a number that could be represented on this number line. The digits of the number add up to 13. What is the number?
To help you plan your 3 maths lesson on: Position 3-digit numbers on number lines, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Position 3-digit numbers on number lines, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Representing 3-digit numbers, comparing and positioning on number lines unit, dive into the full primary maths curriculum, or learn more about lesson planning.