# Solving problems with decimals using addition and subtraction

In this lesson, we will solve addition and subtraction problems with decimals and generate our own word problems to suit equations. We will develop our understanding of decimal problem-solving through bar models and a variety of real life contexts.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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!

Q1.6.3 + 12.27

1/6

Q2.2.89 - 1.41 =

2/6

Q3.7.3 + 7.2 =

3/6

Q4.2.671 + 5.999

4/6

Q5.4.53 - 4.49

5/6

Q6.1.82 + 4.08

6/6

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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!

Q1.6.3 + 12.27

1/6

Q2.2.89 - 1.41 =

2/6

Q3.7.3 + 7.2 =

3/6

Q4.2.671 + 5.999

4/6

Q5.4.53 - 4.49

5/6

Q6.1.82 + 4.08

6/6

# 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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# To solve and represent decimal problems

Exit quiz: Again for this quiz we are revising everything you have learned in the lesson. Which equation will solve each problem?

Q1.Sofia is 134.7cm tall. Her sister is 107.4cm tall. How much taller is Sofia than her sister?

1/6

Q2.How much taller is Sofia than her sister?

2/6

Q3.It is Grandad’s birthday soon and he wants to hire a sports car for his present. A sports car costs £49.50 initial payment then £29.50 per hour. Grandad is bought 4 hour's hire. How much did Grandad’s present cost?

3/6

Q4.How much did Grandad's present cost?

4/6

Q5.To visit his grandmother, Zaid takes a train 6.37 km and a car 5.45 km. How many kilometres is his journey in total?

5/6

Q6.The temperature in the classroom was 21.8 °C. Claire left the door open and the temperature dropped by 3.7 °C. What was the temperature now?

6/6

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# To solve and represent decimal problems

Exit quiz: Again for this quiz we are revising everything you have learned in the lesson. Which equation will solve each problem?

Q1.Sofia is 134.7cm tall. Her sister is 107.4cm tall. How much taller is Sofia than her sister?

1/6

Q2.How much taller is Sofia than her sister?

2/6

Q3.It is Grandad’s birthday soon and he wants to hire a sports car for his present. A sports car costs £49.50 initial payment then £29.50 per hour. Grandad is bought 4 hour's hire. How much did Grandad’s present cost?

3/6

Q4.How much did Grandad's present cost?

4/6

Q5.To visit his grandmother, Zaid takes a train 6.37 km and a car 5.45 km. How many kilometres is his journey in total?

5/6

Q6.The temperature in the classroom was 21.8 °C. Claire left the door open and the temperature dropped by 3.7 °C. What was the temperature now?

6/6

# Lesson summary: Solving problems with decimals using addition and subtraction

## Time to move!

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

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga