# Solve problems involving scale factor in shapes

## Lesson details

### Key learning points

1. In this lesson, we will solve problems involving scale factor. We will introduce the vocabulary 'similar' and 'scale factor'. We will determine the scale factor of enlargement for various transformations.

### 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.

## Video

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## Worksheet

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## Starter quiz

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### 4 Questions

Q1.
What is the ratio of squares to hexagons?
Correct answer: 1 : 2
2 : 1
Q2.
What is the ratio of hexagons to squares?
1 : 2
Correct answer: 2 : 1
Q3.
Sarah is making chocolate chip cookies. For every 6 milk chocolate cookies she makes, she makes 1 white chocolate cookie. What is the ratio of milk chocolate to white chocolate cookies?
1:6
Q4.
Zak bakes chocolate muffins and blueberry muffins in the ratio 3:1. If he makes 24 muffins, how many are chocolate?
12
6

## Exit quiz

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### 3 Questions

Q1.
Square B is an enlargement of square A. What is the scale factor of this enlargement?
Correct answer: Scale factor 3
Scale factor 4
Scale factor 8
Q2.
Triangle B is an enlargement of triangle A. What is the scale factor of this enlargement?
Scale factor 3
Scale factor 8
Correct answer: Scale factor 9
Q3.
Rectangle A has been enlarged by scale factor 6. What is the missing dimension on rectangle B?
18 cm
Correct answer: 6 cm
7 cm