Collecting like terms

In this lesson you will learn to collect together like terms and manipulate linear expressions.

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.Which of the following best describes an expression?

1/5

Q2.Which of the following is NOT an expression?

2/5

Q3.How should we write 5 x a - 2?

3/5

Q4.Which value of x means that 3x < 2x + 1

4/5

Q5.Which value of y means that -3y - 1 > 2y

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.Which of the following best describes an expression?

1/5

Q2.Which of the following is NOT an expression?

2/5

Q3.How should we write 5 x a - 2?

3/5

Q4.Which value of x means that 3x < 2x + 1

4/5

Q5.Which value of y means that -3y - 1 > 2y

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:

Collecting Like Terms 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.Fill in the gap. We can collect together like terms of variables and constants in order to ______ algebraic expressions.

1/6

Q2.Fill in the gap: 14 × 3 = 10 × 3 + ____ × 3

2/6

Q3.Fill in the gaps: 5a + 9a = ___ × a = ____

3/6

Q4.Fill in the gaps: 18x + 20x = 30x + ____

4/6

Q5.Simplify the expression 10a -4b + 2a + b

5/6

Q6.Simplify the expression -20x + 3 - 8y + x -y

6/6

Quiz:

Collecting Like Terms 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.Fill in the gap. We can collect together like terms of variables and constants in order to ______ algebraic expressions.

1/6

Q2.Fill in the gap: 14 × 3 = 10 × 3 + ____ × 3

2/6

Q3.Fill in the gaps: 5a + 9a = ___ × a = ____

3/6

Q4.Fill in the gaps: 18x + 20x = 30x + ____

4/6

Q5.Simplify the expression 10a -4b + 2a + b

5/6

Q6.Simplify the expression -20x + 3 - 8y + x -y

6/6

Lesson summary: Collecting like terms

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