Understand subtraction as decreasing an amount
Lesson 3 / 10
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Lesson outcome
I can describe and interpret subtraction stories which involve decreasing an amount and write equations to represent this.
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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.
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