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### Number and algebra

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# Two Dice

## Two Dice

**Notes for adults**

You will need two dice to play this game. The children can count the total number of spots on the dice or add them together using number facts they already know.

Record the results and explore the different totals that you can get.

Help them to find all the possible combinations.

**Why do this problem?**

What children need to know to play this game

### Possible approach

### Key questions

### Possible extension

### Possible support

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Age 5 to 7

Challenge Level

- Problem
- Getting Started
- Student Solutions
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Printable NRICH Roadshow resource.

Here are two dice.

If you add up the dots on the top you'll get $7$.

Find two dice to roll yourself. Add the numbers that are on the top.

What other totals could you get if you roll the dice again?

What other totals could you get if you roll the dice again?

You will need two dice to play this game. The children can count the total number of spots on the dice or add them together using number facts they already know.

Record the results and explore the different totals that you can get.

Help them to find all the possible combinations.

This activity provides a valuable experience for younger pupils to explore some simple additions while finding all possibilities.

What children need to know to play this game

The children need to be able to roll two dice and identify their score.

Using a dice with dots on, encourage discussion as to what numbers are represented by the faces of the dice before introducing the challenge itself.

You could support the children to collect their totals on the board. Ask them how they should be arranged and see if they can suggest a systematic way of recording their results. For example, they might start with all the totals that use a $1$. In this way, you can ask the class to talk about the patterns they notice and this will help to reveal any combinations that are missing.

These questions have been phrased in ways that will help you to identify the children's prior knowledge about both the number concepts involved and the strategies and mathematical thinking needed to solve the problem.

Can you make a bigger/smaller total?

What is the highest total you could make?

What is the lowest total you could make?

If one dice shows $6$, what could the other dice be showing?

What is the lowest total you could make?

If one dice shows $6$, what could the other dice be showing?

How will you know when you've found all the totals?

You could make use of more dice and/or dice with different numbers of faces. Alternatively, consider finding the difference between the two numbers or the product of the two numbers.

Children who struggle with addition may count the dots to help them but encourage them to articulate the number sentence once they have done so. This will help them to build the visualisations of the numbers as dotty dice patterns which will support their learning of number bonds.