Addition and subtraction within 10 | Maths | Quizalize & Oak National Academy

Starter quiz

Look at this image. Match the parts of the story.

First

⇔

there were six pencils in a pot ✓

Then

⇔

2 pencils were taken out of the pot ✓

Now

⇔

there are 4 pencils in the pot ✓
This image shows a representation of a story. Order the parts of the story.

1

⇔

First, there were 9 books on a shelf.

2

⇔

Then, 4 books were taken off the shelf.

3

⇔

Now, there are 5 books on the shelf.
The cubes represent an addition equation. Which subtraction equation would undo this addition?

10 - 6 = 4

4 + 6 = 10

10 - 4 = 6 ✓
The cubes represent a subtraction equation. Which addition equation would undo this subtraction?

2 + 6 = 8 ✓

8 - 6 = 2

8 - 2 = 6
Which equations could this number line represent?

10 + 3 = 7

10 - 3 = 7 ✓

3 + 7 = 10

7 + 3 = 10 ✓
Find half of each of these numbers.

Half of 10

⇔

5 ✓

Half of 2

⇔

1 ✓

Half of 8

⇔

4 ✓

Half of 4

⇔

2 ✓

Half of 6

⇔

3 ✓

Exit quiz

Look at the bar model. 2 children had juice with their lunch. 5 children had water. How many children had a drink with their lunch? What is the missing whole?

'7' ✓
Look at the bar model. 9 children were having their lunch. 2 chose to eat a banana. The rest chose an apple. How many children chose an apple?

'7' ✓
Look at this image showing cheese sandwiches and ham sandwiches. Which sentences are true?

4 children had cheese sandwiches ✓

8 children had ham sandwiches

There were an equal number of ham sandwiches and cheese sandwiches. ✓
Look at the image. Jacob asks, "If I take 3 cups from the tray, how many cups will be left on the tray?" ______ cups.

'4' ✓
There is a limit of 10 cups on a tray. How many more cups can be placed on this tray? ______ more cups.

'2' ✓
Which equation shows this story?

7 - 4 = 3

7 - 3 = 4 ✓

7 + 4 = 3

Worksheet

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Presentation

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Video

Lesson Details

Key learning points

Part + part = whole
Whole − known part = unknown part

Common misconception

Children may misrepresent a given problem meaning they are led to calculate the solution incorrectly.

Children may identify the solution quickly when working with smaller numbers, but it is still important they are encouraged to visualise and represent each problem so that they know how to reveal the structure of the maths in more complex problems.

Keywords

Part - A piece or section of the whole.
Whole - All of a group or number.
Unknown - An unknown is a quantity that has a set value but it is represented by a symbol or letter.
Known - A given value.