# Applying and consolidating: Related number facts and appropriate strategies

In this lesson, we will apply and consolidate our knowledge of deriving related number facts and most efficient strategies for calculating addition and subtraction equations. We will recap our key learning and apply that learning to answer different questions.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Mrs Crane has used the strategy round and adjust to solve the following equation: 3567 - 2005 = ... which number should she round?

1/5

Q2.Mrs Crane has used the strategy round and adjust to solve the following equation: 4997 - 1564 = ... which number should she round?

2/5

Q3.Which is the most efficient strategy to solve the following equation: 5006 - 4992 =

3/5

Q4.Which is the most efficient strategy to solve the following equation: 7012 - 6991 =

4/5

Q5.Which is the most efficient strategy to solve the following equation: 4547 - 1345 =

5/5

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Mrs Crane has used the strategy round and adjust to solve the following equation: 3567 - 2005 = ... which number should she round?

1/5

Q2.Mrs Crane has used the strategy round and adjust to solve the following equation: 4997 - 1564 = ... which number should she round?

2/5

Q3.Which is the most efficient strategy to solve the following equation: 5006 - 4992 =

3/5

Q4.Which is the most efficient strategy to solve the following equation: 7012 - 6991 =

4/5

Q5.Which is the most efficient strategy to solve the following equation: 4547 - 1345 =

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Applying and consolidating: Related number facts and appropriate strategies

Using what we have learnt today, can you answer the following questions?

Q1.Mrs Crane has derived some facts from the following equation: 10 + 3 = 13. Which of the following is NOT correct?

1/5

Q2.Mrs Crane has derived some facts from the following equation: 2 + 3 = 5. Which of the following is NOT correct?

2/5

Q3.Which is the most efficient strategy to use to solve the following equation: 2432 + 2438

3/5

Q4.Which is the most efficient strategy to use to solve the following equation: 5434 - 1996

4/5

Q5.Which is the most efficient strategy to use to solve the following equation: 4007 - 3991

5/5

Quiz:

# Applying and consolidating: Related number facts and appropriate strategies

Using what we have learnt today, can you answer the following questions?

Q1.Mrs Crane has derived some facts from the following equation: 10 + 3 = 13. Which of the following is NOT correct?

1/5

Q2.Mrs Crane has derived some facts from the following equation: 2 + 3 = 5. Which of the following is NOT correct?

2/5

Q3.Which is the most efficient strategy to use to solve the following equation: 2432 + 2438

3/5

Q4.Which is the most efficient strategy to use to solve the following equation: 5434 - 1996

4/5

Q5.Which is the most efficient strategy to use to solve the following equation: 4007 - 3991

5/5

# Lesson summary: Applying and consolidating: Related number facts and appropriate strategies

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Dance