Solve problems where the known percentage part and size represents a change to the whole

Maths

In this unit pupils will explain what percent means and how to represent a percentage in different ways. They will learn how to convert percentages to decimals and fractions and solve conversion problems. In the future unit pupils will interpret and construct pie charts and line graphs. They will read scales  linked to fractions angles percentages and understanding proportional relationships.

In the prior unit pupils learned how to multiply 2 unit fractions and 2 non-unit fractions. They learned how to divide a unit fraction and a non-unit fraction by a whole number. In this unit pupils will explain what percent means and how to represent a percentage in different ways. They will learn how to convert percentages to decimals and fractions and solve conversion problems.

Understanding percentages

When items cost less in a sale, match the ways that you can calculate a new price.

What is the new price of the sunglasses? £{{ }}

What is the new price of the hat? £{{ }}

What was the original price of this T-shirt? £{{ }}

Lucas has read 25% of his book. He has read 73 pages. His book is {{ }} pages long.

Aisha thinks of a number. 20% of her number is 95     What is her number?

Lucas has read 75% of his book. This is 99 pages. How many pages are in his book?{{ }} pages

Aisha thinks of a number. 60% of her number is 78     What number is Aisha thinking of?

Lucas takes part in a race. He has run 70% of the race which is 840 m     What is the distance of the whole race? {{ }} m

This lesson will soon be taken down.

Solve problems where the known percentage part and size represents a change to the whole

Lesson outcome