Understand subtraction as decreasing an amount
I can describe and interpret subtraction stories which involve decreasing an amount and write equations to represent this.
Understand subtraction as decreasing an amount
I can describe and interpret subtraction stories which involve decreasing an amount and write equations to represent this.
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Lesson details
Key learning points
- Decreasing the first amount in a story is a type of subtraction.
- It can be represented as a ‘First, then, now’ story.
- It can also be represented as an equation.
- The first amount in a ‘First, then, now’ story must be written first in an equation.
Keywords
First - Before anything else.
Then - After something in time.
Now - At the present time.
Decrease - Make something smaller in size or quantity.
Common misconception
Children may find the ‘then’ part of the story, where the amount changes, difficult to identify.
Draw attention to the change, talking about it as a decrease.
To help you plan your year 1 maths lesson on: Understand subtraction as decreasing an amount, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Understand subtraction as decreasing an amount, download all teaching resources for free and adapt to suit your pupils' needs.
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Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
