New

New

Year 1

# Find the missing part in an equation

I can find the missing part in an equation.

New

New

Year 1

# Find the missing part in an equation

I can find the missing part in an equation.

## Lesson details

### Key learning points

- Number sense and subitising skills can be used to help find missing parts.
- Patterns in the number system can be used to help find missing parts.
- Working systematically can help to spot number patterns.

### Common misconception

Children may think the missing number in an equation always has to be the whole.

Encourage children to record their thinking, bringing attention to the missing part by underlining it.

### Keywords

Equation - Shows that one number or expression is equal to another.

Part - Any numbers that can be added together to form a whole.

Whole - The result of adding two or more parts.

Encourage children to work systematically and build number sense by predicting the next missing part. Encourage checking to see if they are right. Continue using the bar model during Learning Cycle 2 to highlight the change in the parts.

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).

## Video

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## Starter quiz

Download starter quiz

### 6 Questions

Q1.

Without counting, tell me how many balls are in the picture?

Q2.

Which of these numbers is a part in this equation? 4 + 2 = 6

6

Q3.

Match the amounts that are equal.

2 + 4

5 + 3

9 + 1

Q4.

Which equation can represent this picture?

8 = 5 = 3

3 + 5 + 8

5 = 3 + 8

Q5.

There are 3 frogs in the pond and 6 frogs on a log. Which equation would I write to find out how many frogs there are altogether?

6 - 3 = _

9 + 3 = _

Q6.

= 4 + 5

## Exit quiz

Download exit quiz

### 6 Questions

Q1.

There are 6 pebbles altogether. Fill in the missing part.

Q2.

What does the 4 represent in this equation? 6 + 4 = 10

The whole group

The counters we can see

Q3.

Izzy has this bead string made up of 10 beads. She hides some beads. Which bar model represents this?

Q4.

Jun rolls two dice. He writes this equation to show the number he rolled and the total altogether. 5 + _ = 8 Which of these dice represents the missing part in the equation?

Q5.

Izzy has 6 counters. She hides 2. Fill in the missing part to show how many she can still see.

6

2

Q6.

Use the number patterns in the equations to find the missing part in this equation?

8

3