Partition a whole into two parts and write as a subtraction equation
I can partition a whole into two parts and express this as a subtraction equation.
Partition a whole into two parts and write as a subtraction equation
I can partition a whole into two parts and express this as a subtraction equation.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- When the whole and one part of the whole is known, subtraction can be used to find the missing part.
- This can be represented with a subtraction equation.
- The minus sign can be used to show that one part has been split or separated from the whole group.
Keywords
Subtract - To separate or take away one number from another, or to decrease an amount.
Minus sign - The symbol in an equation which shows that a number has been partitioned, taken away or decreased.
Partition - The act of splitting an object or value down into smaller parts.
Known part - A piece or section of the whole that is known.
Unknown part - A piece or section of the whole that is not known.
Common misconception
Children may forget to start with the whole group when writing subtraction equations.
Maintain a strong focus throughout on what the numbers in equations represent. Explore mistakes that are made to clarify understanding.
To help you plan your year 1 maths lesson on: Partition a whole into two parts and write as a subtraction equation, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Partition a whole into two parts and write as a subtraction equation, 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.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 1 maths lessons from the Additive structures: addition unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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Starter quiz
6 Questions
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Exit quiz
6 Questions
