Subtract 3-digit multiples of 10 by finding the difference between them
I can subtract 3-digit multiples of 10 by finding the difference between them.
Subtract 3-digit multiples of 10 by finding the difference between them
I can subtract 3-digit multiples of 10 by finding the difference between them.
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Lesson details
Key learning points
- When numbers are close together, the difference between them is small.
- Finding the difference means we count on from the subtrahend to the minuend.
- A number line or a bar model can represent finding the difference.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - A subtrahend is a number subtracted from another.
Difference - The difference is the result after subtracting one number from another.
Common misconception
Children will often reverse the minuend and subtrahend because they don't always appear in the order that they would in an expression.
Give time to ensure that the children understand the bar model representation and encourage them to discuss which number is the minuend and which is the subtrahend before engaging in a strategy for mental subtraction.
To help you plan your year 3 maths lesson on: Subtract 3-digit multiples of 10 by finding the difference between them, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Subtract 3-digit multiples of 10 by finding the difference between them, 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 2 maths lessons from the Informal and mental strategies for adding and subtracting two 3-digit numbers 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
80
60
25
5
Exit quiz
6 Questions
