New
New
Year 1

# Addition and subtraction facts within 10

I can solve problems using known addition and subtraction facts within 10

New
New
Year 1

# Addition and subtraction facts within 10

I can solve problems using known addition and subtraction facts within 10

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## Lesson details

### Key learning points

1. We can visualise a problem to help us understand what it is asking.
2. We can represent addition and subtraction facts using bar models and manipulatives.
3. We can calculate using a range of strategies to solve addition and subtraction problems within 10

### Common misconception

Without correct representation, children may struggle to know what to calculate.

If needed, provide support at this stage so that the structure of the mathematics is clear to children.

### Keywords

• Visualise - To imagine a given problem before us in real life.

• Represent - To communicate mathematical ideas through models.

• Calculate - To choose one of the four operations to solve a problem.

• Check - To evaluate working, ensuring our response provides an answer to the given problem.

### 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.
What near double is the representation showing?
2 + 1
Q2.
Jacob rolled two dice. He rolled a near double. Which of these could he have rolled?
Correct Answer: An image in a quiz
Correct Answer: An image in a quiz
Q3.
What is the missing number in this bar model?
6
4
3
Q4.
Which of these double facts would help to solve this near-double problem? 4 + 3 = ?
5 + 5
1 + 1
Q5.
Sam had 3 toy trains. Jacob had 4 toy trains. How many trains did they have in total.
5
6
8
Q6.
Jacob had 9 candles on his birthday cake. With his first blow he managed to blow out 5. How many candles are still lit?

## Exit quiz

### 6 Questions

Q1.
Which representation matches the bar model?
Correct Answer: An image in a quiz
Q2.
Which representation matches Sam's statement.
Correct Answer: An image in a quiz
Q3.
The representation matches with which question?
There were 5. 3 more cars arrived. How many cars are in the carpark now?
Correct answer: There were 5. 4 more cars arrived. How many cars are in the carpark now?
There were 4. 3 more cars arrived. How many cars are in the carpark now?
Q4.
There were 5 birds in the tree. 3 of them flew away. How many birds are left in the tree?
Q5.
Sam had 6 pounds. He spent 4 pound on a new book. How much money does he have left? What would the best strategy be?
Use a near double
Use a number line and count backwards in ones
Correct answer: Use knowledge of consecutive even numbers
Q6.
Sam has 4 cats and 3 dogs. How many animals does Sam have altogether? What would the best strategy be?
Correct answer: Use a near double
Use a number line and count backwards in ones
Use knowledge of consecutive even numbers