New
New
Year 6

Solve problems involving percentages in a range of contexts

I can solve problems involving percentages in a range of contexts.

New
New
Year 6

Solve problems involving percentages in a range of contexts

I can solve problems involving percentages in a range of contexts.

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Lesson details

Key learning points

  1. If I know the value of the whole, I can calculate the value of a part.
  2. If I know the value of a part, I can calculate the value of the whole.
  3. Addition, subtraction, multiplication and division can be used to calculate a new percentage from known percentages.

Keywords

  • Percentage - A percentage is a proportion of a whole.

Common misconception

When finding a price has reduced by 25%, pupils may give the answer as 25% of the number, rather than seeing it as 75% of the whole.

Emphasise that '25% off' means that the price has been reduced by 25%. The whole, subtract 25%, is equal to 75% of the whole. Bar models are useful for showing this.

In this lesson, pupils solve a range of problems using percentages, including problems with an unknown part or an unknown whole. Encourage pupils to use tables to help them organise their thinking and, where needed, represent problems using bar models.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Match each percentage amount to the value of 100% e.g. If 10% = 1.8 then 100% = ___
Correct Answer:10% = 1.8,100% = 18

100% = 18

Correct Answer:25% = 35,100% = 140

100% = 140

Correct Answer:50% = 82.5,100% = 165

100% = 165

Correct Answer:1% = 2.7,100% = 270

100% = 270

Q2.
What is the new price of the sunglasses? £
An image in a quiz
Correct Answer: 12
Q3.
What is the new price of the hat? £
An image in a quiz
Correct Answer: 16.50
Q4.
Which item is the most expensive?
An image in a quiz
Correct answer: The cap
The sunglasses
Q5.
What was the original price of this T-shirt? £
An image in a quiz
Correct Answer: 30
Q6.
What was the original price of this T-shirt? £
An image in a quiz
Correct Answer: 20

6 Questions

Q1.
If 100% = 1,100 match these percentages to the answers.
Correct Answer:10%,110

110

Correct Answer:5%,55

55

Correct Answer:15%,165

165

Correct Answer:40%,440

440

Correct Answer:90%,990

990

Q2.
Work out the new price of the toy robot. £
An image in a quiz
Correct Answer: 16.80
Q3.
Work out the new price of the toy panda. £
An image in a quiz
Correct Answer: 13.50
Q4.
Lucas thinks of a number and says that 4% of his number is 160 What is his number?
Correct Answer: 4,000
Q5.
Sofia has read 70% of her book which is 210 pages. How long is her book in total? pages
Correct Answer: 300
Q6.
Laura has cycled for 72 km which is 75% of her race. The total length of the race is km
Correct Answer: 96