Calculate the difference in different contexts
I can calculate the difference in different contexts.
Calculate the difference in different contexts
I can calculate the difference in different contexts.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- You calculate the difference by counting on from the known part to the whole.
- The difference is the answer to a subtraction calculation.
- The difference is one of the parts that make the whole.
Keywords
Difference - The amount which a number is greater or smaller.
Subtraction - To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.
Count on - A mental strategy used to add numbers.
Common misconception
Children think that 'counting on' is used solely as a strategy in addition.
Children should be made aware that the strategy for 'counting on' can be used in addition but is used as a strategy for subtraction in this lesson where we are finding the difference between two numbers close in value.
To help you plan your year 2 maths lesson on: Calculate the difference in different contexts, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Calculate the difference in different contexts, 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 Calculating within 20 unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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Lesson video
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Starter quiz
6 Questions
