Add and subtract two from odd numbers within 10
Lesson details
Learning outcome
I can add or subtract two from odd numbers within 10
Key learning points
- Adding two to an odd number gives the odd number after.
- Subtracting two from an odd number gives the odd number before.
- When we count forwards in odd numbers, we add two more each time.
- When we count backwards in odd numbers, we subtract two each time. The result is two less.
Keywords
Odd - Any integer (not a fraction) that cannot be divided exactly by 2
Even - Any integer that can be divided exactly by 2 is an even number. The last digit is 0, 2, 4, 6 or 8
Two more
Two less
Common misconception
Children may incorrectly identify the odd number 'before' or 'after' the one given.
Provide practice in the form of missing number problems where children must identify the odd numbers before or after one given. Do this until fluent. Initially, allow children to use a number line. Remove this scaffold once feeling more confident.
Teacher tip
The sequence of steps in this lesson are the same as those in that for adding and subtracting one, except now we are using children's knowledge of odd numbers 'before' and 'after'. Find time to practise counting forwards and backwards in odd numbers until children are fluent in this pattern.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Match the equations that show that addition is commutative.
6 + 4 = 10
2 + 8 = 10
10 = 9 + 1
10 = 3 + 7
Q2.Match the numbers that are one more and one less.
8
9
6
7
Q3.Which of these numbers are consecutive?
Q4.What is the odd number that comes after 3?
Q5.What is the odd number that comes before 7?
Q6.Which equations does this bar model show?
Assessment exit quiz
6 Questions
Q1.Which of these numbers are odd?
Q2.Which is the next odd number in the sequence?
Q3.The missing odd number on this number line is .
Q4.Which representation shows that 2 has been subtracted from this number?
Q5.What is the missing number in this part-part-whole model?
Q6.Sam has 3 metres of ribbon. She cuts 2 metres off to use to make bracelets. How many metres of ribbon are left? metre.
To help you plan your 1 maths lesson on: Add and subtract two from odd numbers within 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Add and subtract two from odd numbers within 10, 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 1 maths lessons from the Addition and subtraction facts within 10 unit, dive into the full primary maths curriculum, or learn more about lesson planning.