New
New
Year 1

# Addition and subtraction involving zero

I can add and subtract zero and know when the difference is zero.

New
New
Year 1

# Addition and subtraction involving zero

I can add and subtract zero and know when the difference is zero.

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## Lesson details

### Key learning points

1. When zero is added to a number the number, the number does not change.
2. When zero is subtracted from a number, the number does not change.
3. Subtracting a number from itself gives a difference of zero.

### Common misconception

Children may think that adding or subtracting zero gives zero. For example, 6 + 0 = 0 or 4 - 0 = 0

Use manipulatives to help children see that adding or subtracting zero will not change the starting amount. Model this alongside the written equation so that they can see what each part is representing.

### Keywords

• Zero - Zero is the number that represents no amount or objects. When we add zero to a number, the result is just the number, unchanged.

• Add - To find the total, or sum, by combining two or more parts (addends), or to increase an amount by adding another.

• Subtract - To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

• Same - The equal sign is used to show that the values on either side of it are the same.

As with all Year 1 lessons, ensure this concept is explored practically in meaningful contexts that connect to children's everyday experiences of adding and subtracting zero. For example, when no more children join or leave the table at lunchtime.
Teacher tip

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Starter quiz

### 6 Questions

Q1.
How many children are on the bus?
5
6
8
Q2.
How many children are on the bus?
Q3.
Which expression matches the representation of yellow and red counters?
7 + 2
6 + 2
Q4.
Which representation matches the expression 6 + 2 ?
A
Q5.
What is the missing part?
6
2
1
Q6.
Sam had 9 pounds in her purse. She spends 7 pound on a new toy. How much money does she have left?
7 pounds
5 pounds
0 pounds

## Exit quiz

### 6 Questions

Q1.
What is the missing number from this equation? 4 + = 4
1
4
3
Q2.
What is the missing number from this equation? - 0 = 6
0
4
1
Q3.
Which of these equations has a difference of 0?
{{ }}= 9 − 8
Correct answer: {{ }} = 7 − 7
{{ }} = 6 − 0
Q4.
Match the equations to their solutions?
Correct Answer:10 - 10 = ,0

0

Correct Answer:10 - 0 = ,10

10

Correct Answer:0 + 10 = ,10

10

Correct Answer:0 + 0 = ,0

0

Q5.
The teacher had a sheet of 8 stickers. By end of the day, they had given out 8 stickers. How many stickers does the teacher have left?
10
8
2