# Rounding from a calculator: Approximating

In this lesson, students will learn about approximation and how to use that to approximate answers to calculations

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!

## Question 5

Q1.What is 234.8 to the nearest integer?

1/5

Q2.Round 152.8 to the nearest 10

2/5

Q3.Round 9.064 to 2 decimal places

3/5

Q4.Round 18.961 to 1 decimal place

4/5

Q5.Round 7846.7 to the nearest 100

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!

## Question 5

Q1.What is 234.8 to the nearest integer?

1/5

Q2.Round 152.8 to the nearest 10

2/5

Q3.Round 9.064 to 2 decimal places

3/5

Q4.Round 18.961 to 1 decimal place

4/5

Q5.Round 7846.7 to the nearest 100

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:

# Approximation Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 6

Q1.What does this symbol mean? ≈

1/6

Q2.Find an approximation for:

2/6

Q3.A student is thinking of an approximate value for √(67 ). What should her answer be?

3/6

Q4.Find an approximation for:

4/6

Q5.Find an approximation for:

5/6

Q6.Why is the approximation to this calculation greater than the actual answer?

6/6

Quiz:

# Approximation Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 6

Q1.What does this symbol mean? ≈

1/6

Q2.Find an approximation for:

2/6

Q3.A student is thinking of an approximate value for √(67 ). What should her answer be?

3/6

Q4.Find an approximation for:

4/6

Q5.Find an approximation for:

5/6

Q6.Why is the approximation to this calculation greater than the actual answer?

6/6

# Lesson summary: Rounding from a calculator: Approximating

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