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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Number and Place Value

### Buzzy Bee

### Snail One Hundred

### Tug of War

### Five Steps to 50

### All Change

### Biscuit Decorations

### Two-digit Targets

### Count the Crayons

### Writing Digits

### I Like ...

### Eightness of Eight

### Robot Monsters

### Same Length Trains

### Missing Middles

### Making Sticks

### 6 Beads

### What's in a Name?

### Light the Lights

### Grouping GoodiesLive

### That Number Square

### Count the Digits

### How Many?

### Dotty Six

### Largest Even

### How Would We Count?

### Digit Addition

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These activities are part of our Primary collections, which are problems grouped by topic.

Age 5 to 7

Challenge Level

Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

Age 5 to 7

Challenge Level

In this game, you throw a dice and move counters along the snail's body and in a spiral around the snail's shell. It is about understanding tens and ones.

Age 5 to 7

Challenge Level

Can you use the numbers on the dice to reach your end of the number line before your partner beats you?

Age 5 to 7

Challenge Level

Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?

Age 5 to 7

Challenge Level

There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?

Age 5 to 7

Challenge Level

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

Age 5 to 7

Challenge Level

You have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?

Age 5 to 7

Challenge Level

How could you estimate the number of pencils/pens in these pictures?

Age 5 to 7

Challenge Level

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

Age 5 to 7

Challenge Level

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

Age 5 to 7

Challenge Level

What do you see as you watch this video? Can you create a similar video for the number 12?

Age 5 to 7

Challenge Level

Use these head, body and leg pieces to make Robot Monsters which are different heights.

Age 5 to 7

Challenge Level

How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?

Age 5 to 7

Challenge Level

Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of three dominoes?

Age 5 to 7

Challenge Level

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?

Age 5 to 7

Challenge Level

If you put three beads onto a tens/ones abacus you can make the numbers 3, 30, 12 or 21. What numbers can be made with six beads?

Age 5 to 7

Challenge Level

Here's a very elementary code that requires young children to read a table, and look for similarities and differences.

Age 5 to 7

Challenge Level

Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

Age 5 to 7

Challenge Level

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

Age 5 to 11

Challenge Level

Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?

Age 5 to 11

Challenge Level

In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?

Age 5 to 11

Challenge Level

Have a look at these photos of different fruit. How many do you see? How did you count?

Age 5 to 11

Challenge Level

Dotty Six is a simple dice game that you can adapt in many ways.

Age 5 to 11

Challenge Level

How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

Age 5 to 11

Challenge Level

An activity centred around observations of dots and how we visualise number arrangement patterns.

Age 5 to 11

Challenge Level

Try out this number trick. What happens with different starting numbers? What do you notice?