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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Equations and Formulae: Age 11-14

### Fruity Totals

### Your Number Was...

### Temperature

### Equations and Formulae - Short Problems

### What's it Worth?

Y*ou may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.*

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Age 7 to 16

Challenge Level

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

Age 11 to 14

Challenge Level

Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?

Age 11 to 14

Challenge Level

Is there a temperature at which Celsius and Fahrenheit readings are the same?

Age 11 to 16

A collection of short problems on equations and formulae.

Age 11 to 16

Challenge Level

There are lots of different methods to find out what the shapes are worth - how many can you find?

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