Calculations with variables

In this lesson we will look at writing calculations with variables

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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.Answer the following: 18 x (5 - 3) + 7

1/5

Q2.Answer the following: 15 - 5 x 2

2/5

Q3.Answer the following: (18 - 7) x (2 + 5)

3/5

Q4.Which of the following statements matches the calculation 15 x (5 - 3)?

4/5

Q5.Which of the following statements matches the calculation 15 x (5 - 3) + 3?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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.Answer the following: 18 x (5 - 3) + 7

1/5

Q2.Answer the following: 15 - 5 x 2

2/5

Q3.Answer the following: (18 - 7) x (2 + 5)

3/5

Q4.Which of the following statements matches the calculation 15 x (5 - 3)?

4/5

Q5.Which of the following statements matches the calculation 15 x (5 - 3) + 3?

5/5

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Calculations with variables

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

Q1.Which calculation matches the statement: I think of a number. I multiply my number by 2 then I subtract 5. (In the below calculations, m represents the originally thought number.)

1/5

Q2.Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. (In the below calculations, m represents the originally thought number.)

2/5

Q3.Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. I then subtract subtract 6 and finally multiply by 3.

3/5

Q4.Which of the following values of m gives an answer between 50-60 for the following calculation? 5 x m - 3

4/5

Q5.Which of the following values of m gives an answer between 30-35 for the following calculation? 5 x (m - 3)

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Calculations with variables

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

Q1.Which calculation matches the statement: I think of a number. I multiply my number by 2 then I subtract 5. (In the below calculations, m represents the originally thought number.)

1/5

Q2.Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. (In the below calculations, m represents the originally thought number.)

2/5

Q3.Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. I then subtract subtract 6 and finally multiply by 3.

3/5

Q4.Which of the following values of m gives an answer between 50-60 for the following calculation? 5 x m - 3

4/5

Q5.Which of the following values of m gives an answer between 30-35 for the following calculation? 5 x (m - 3)

5/5

Lesson summary: Calculations with variables

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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

This was the final lesson in the unit Order of operations.

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