The rule of four

In this lesson, you will identify multiplicative relationships between 'times tables' and use patterns to solve problems in direct proportion contexts.

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Fill in the gaps: If the proportion between the ____________ is constant, then the ratios are __________________.

1/5

Q2.The ratio of the top bar is 1 : 5 : 2. What is the equivalent ratio shown on the bottom bar?

2/5

Q3.Squash and water are mixed in the following ratios to make a drink. Which drinks will taste the same? A) 4:10 B) 3:8 C) 9:24 D) 15:25

3/5

Q4.Light green paint is mixed with green : white as 2: 5. What ratio would be needed for 12 units of green?

4/5

Q5.Light green paint is mixed with green : white as 2: 5. Write the ratio for the white paint needed for 1 unit of green.

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Fill in the gaps: If the proportion between the ____________ is constant, then the ratios are __________________.

1/5

Q2.The ratio of the top bar is 1 : 5 : 2. What is the equivalent ratio shown on the bottom bar?

2/5

Q3.Squash and water are mixed in the following ratios to make a drink. Which drinks will taste the same? A) 4:10 B) 3:8 C) 9:24 D) 15:25

3/5

Q4.Light green paint is mixed with green : white as 2: 5. What ratio would be needed for 12 units of green?

4/5

Q5.Light green paint is mixed with green : white as 2: 5. Write the ratio for the white paint needed for 1 unit of green.

5/5

Video

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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.

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:

The rule of four quiz

Have a go at this quiz to check your understanding

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Fill in the gap: If two quantities are in the same ratio then there are _______ relationships I can use to find a missing value.

1/5

Q2.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

2/5

Q3.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

3/5

Q4.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

4/5

Q5.Yellow and red counters are in the ratio 2 : 3. What fraction of the counters are yellow?

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:

The rule of four quiz

Have a go at this quiz to check your understanding

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Fill in the gap: If two quantities are in the same ratio then there are _______ relationships I can use to find a missing value.

1/5

Q2.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

2/5

Q3.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

3/5

Q4.Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

4/5

Q5.Yellow and red counters are in the ratio 2 : 3. What fraction of the counters are yellow?

5/5

Lesson summary: The rule of four

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