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Lesson details

Key learning points

  1. In this lesson, we will understand how to use double number lines to represent proportion problems.

Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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5 Questions

Q1.
Fill in the gap: the diagram shows a triangle that has been _________ by a scale factor of 3.5.
An image in a quiz
bigger
Correct answer: enlarged
proportionality
ratio
Q2.
Fill in the gap: the ratio between the side lengths AB and BC is 2 : ____.
An image in a quiz
10.5
2
Correct answer: 3
ratio
Q3.
Fill in the gaps: The _______ between the side length DE and EF is also 2 : ___.
An image in a quiz
proportionality, 10.5
proportionality, 3
ratio, 10.5
Correct answer: ratio, 3
Q4.
Fill in the gap: The constant of _________ between the two triangles is 3.5.
An image in a quiz
bigger
enlargement
Correct answer: proportionality
ratio
Q5.
What is the length of DE?
An image in a quiz
6cm
70cm
Correct answer: 7cm
9.5cm

5 Questions

Q1.
If a double number line starts with 4 on the top and 3 on the bottom, what will be the first number that appears both above and below the lines?
Correct answer: 12
18
24
9
Q2.
On a double number line, 10 is above the line and 40 is below the line. What is the constant of proportionality?
1
10
Correct answer: 4
40
Q3.
On a double number line, 4 is above the line and 4.8 is below the line. What is the constant of proportionality?
0.8
Correct answer: 1.2
4
4.8
Q4.
What is the missing number (indicated by the empty box) on this number line?
An image in a quiz
0.6
16
Correct answer: 2.4
8
Q5.
What is the constant of proportionality for this number line?
An image in a quiz
0.6
16
Correct answer: 2.4
8