Count forwards and backwards in multiples of 2, 20, 5, 50 and 25
Lesson details
Learning outcome
I can count forwards and backwards in 2s, 20s, 5s, 50s and 25s.
Key learning points
- If you can count in 2s, you can count in 20s. The 1s or 10s digit follows the pattern of 2, 4, 6, 8 and 0
- If you can count in 5s, you can count in 50s. The 1s or 10s digit follows the pattern of 5 and 0
- When you count up in 25s, the 10s and 1s digits are always 25, 50, 75 or 0
Keywords
Multiple - A multiple is the result of multiplying a number by another whole number.
Pattern - A pattern is a repeated set of numbers, shapes or objects.
Common misconception
Pupils may make mistakes with counting, particularly when crossing a 100s boundary.
Encourage pupils to use the pattern to help them count accurately, using this to predict the next number in the count.
Teacher tip
Encourage pupils to count out loud as much as possible. Base ten block representations may also be helpful for pupils to represent numbers as they say the count.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What number comes next: 30, 35, 40, ?
Q2.What number comes next: 20, 22, 24, ?
Q3.What number is missing from the number track?
Q4.What number is missing from the number track?
Q5.Match up the equations.
150
250
300
200
Q6.What number is subtracted from 420 to equal 380? Use the number line representation to help you.
Assessment exit quiz
6 Questions
Q1.Which multiple of 20 comes next: 240, 260, 280, ?
Q2.Which numbers are multiples of 25?
Q3.What number is missing from the number track?
Q4.What number is missing from the number track?
Q5.Sofia counts backwards in multiples of 25 from 325. What are the next three numbers she will say?
Q6.Andeep counts backwards in multiples of 20. What number has he missed from his count?
To help you plan your 3 maths lesson on: Count forwards and backwards in multiples of 2, 20, 5, 50 and 25, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Count forwards and backwards in multiples of 2, 20, 5, 50 and 25, 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.