Year 1

Year 1

# Recognising the relationship between addition and subtraction

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## Lesson details

### Key learning points

1. In this lesson, we will explore how addition and subtraction are linked, and how a part whole relationship can produce related facts.

### 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.

## Video

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## Worksheet

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## Starter quiz

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### 3 Questions

Q1.
First, there were six ladybirds. Then, two of them flew away. How many ladybirds were left?
5
8
Q2.
The farmer owned seven sheep. Five were inside the pen. How many were outside the pen?
6
7
Q3.
There were nine fish in the tank. The, one jumped out of the tank! How many fish were left in the tank?
3
5

## Exit quiz

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### 3 Questions

Q1.
This part whole model can be expressed as 7 - 3 = 4. Choose the other subtraction equation that can be written from this part whole model.
7 - 0 = 7
7 - 1 = 6
Correct answer: 7 - 4 = 3
Q2.
There are five elves standing up, and two elves sitting down. Altogether, there are seven elves. This can be written as an equation: 5 + 2 = 7. How else can this equation be written?
1 + 6 = 7
Correct answer: 2 + 5 = 7
7 = 3 + 4
Q3.
This part whole model can be expressed as 1 + 6 = 7. Choose the other addition equation that can be written from this part whole model.
2 + 5 = 7
3 + 4 = 7
Correct answer: 6 + 1 = 7