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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Guess What?

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### Add 3 Dice

### Sealed Solution

Links to the University of Cambridge website
Links to the NRICH website Home page

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Age 7 to 11

Challenge Level

- Problem
- Getting Started
- Student Solutions
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What is the same about some of these shapes?

What is different about them?

How could these similiarities and differences help you to come up with a question?

Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do this?

Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?