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There are **21** NRICH Mathematical resources connected to **Percentages**, you may find related items under Fractions, decimals, percentages, ratio and proportion.

Problem
Primary curriculum
Secondary curriculum
### Doughnut Percents

A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.

Age 7 to 14

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### The Legacy

Your school has been left a million pounds in the will of an ex- pupil. What model of investment and spending would you use in order to ensure the best return on the money?

Age 14 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Dating Made Easier

If a sum invested gains 10% each year how long before it has doubled its value?

Age 14 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### A Change in Code

Can you find the percentage increase if the results appear in code?

Age 14 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Fractions and Percentages Card Game

Can you find the pairs that represent the same amount of money?

Age 11 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Matching Fractions, Decimals and Percentages

Can you match pairs of fractions, decimals and percentages, and beat your previous scores?

Age 7 to 14

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Would You Rather?

Would you rather: Have 10% of Â£5 or 75% of 80p? Be given 60% of 2 pizzas or 26% of 5 pizzas?

Age 7 to 11

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Mathland Election

A political commentator summed up an election result. Given that there were just four candidates and that the figures quoted were exact find the number of votes polled for each candidate.

Age 11 to 14

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Trusting the Tabloids

Can you match the cards and figure out whether the tabloid headlines can be trusted?

Age 11 to 16

Challenge Level

Article
Primary curriculum
Secondary curriculum
### Activities on the Gattegno Chart

In this article, Alf outlines six activities using the Gattegno chart, which help to develop understanding of place value, multiplication and division.

Age 5 to 11

Problem
Primary curriculum
Secondary curriculum
### Retiring to Paradise

When Charlie retires, he's looking forward to the quiet life, whereas Alison wants a busy and exciting retirement. Can you advise them on where they should go?

Age 11 to 14

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### The Money Maze

Go through the maze, collecting and losing your money as you go. Which route gives you the highest return? And the lowest?

Age 7 to 11

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### You Never Get a Six

Charlie thinks that a six comes up less often than the other numbers on the dice. Have a look at the results of the test his class did to see if he was right.

Age 7 to 11

Challenge Level

Article
Primary curriculum
Secondary curriculum
### Roasting Old Chestnuts 4

For teachers. Yet more school maths from long ago-interest and percentages.

Age 11 to 16

Problem
Primary curriculum
Secondary curriculum
### Put Out the Flags

Tim and Beth both have a string of flags. Use the percentages to find out who has the most flags.

Age 11 to 14

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### The Magic Number and the Hepta-tree

Find the exact difference between the largest ball and the smallest ball on the Hepta Tree and then use this to work out the MAGIC NUMBER!

Age 7 to 11

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Round and Round

Prove that the shaded area of the semicircle is equal to the area of the inner circle.

Age 14 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Circle Packing

Equal circles can be arranged so that each circle touches four or six others. What percentage of the plane is covered by circles in each packing pattern? ...

Age 14 to 16

Challenge Level

Problem
Primary curriculum
Secondary curriculum
### Percentage Unchanged

If the base of a rectangle is increased by 10% and the area is unchanged, by what percentage is the width decreased by ?

Age 14 to 16

ShortChallenge Level

Problem
Primary curriculum
Secondary curriculum
### Are You a Smart Shopper?

In my local town there are three supermarkets which each has a special deal on some products. If you bought all your shopping in one shop, where would be the cheapest?

Age 7 to 11

Challenge Level