Year 1
Year 1

Counting back in ones to subtract

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Lesson details

Key learning points

  1. In this lesson, we will practice subtracting by counting back in ones. We will do this with the support of a number line.

Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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3 Questions

Q1.
First, there were six glasses of juice. Then someone knocked over two glasses. How many glasses are left?
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2 glasses.
Correct answer: 4 glasses.
6 glasses.
Q2.
First, there were five eggs in the carton. Then, Snow White cracked three to bake a cake. How many eggs were left in the carton?
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10 eggs.
Correct answer: 2 eggs.
5 eggs.
Q3.
First, there were six glasses of juice. Then someone knocked over two glasses. Now there are four glasses left. Choose the equation that represents this story.
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4 - 2 = 2
Correct answer: 6 - 2 = 4
6 + 2 = 8

3 Questions

Q1.
Use the number line to solve 8 - 4 =
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Correct answer: 4
6
8
Q2.
Use the number line to solve 10 - 3 =
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5
6
Correct answer: 7
Q3.
Use the number line to solve 5 - 2 =
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Correct answer: 3
4
5