# Being Curious - Primary Number

### Five Steps to 50

##### Age 5 to 7Challenge Level

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

### Eightness of Eightlive

##### Age 5 to 7Challenge Level

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

### Ring a Ring of Numbers

##### Age 5 to 7Challenge Level

Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.

### Light the Lights

##### Age 5 to 7Challenge Level

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

### More Numbers in the Ring

##### Age 5 to 7Challenge Level

If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?

### Number Detective

##### Age 5 to 11Challenge Level

Follow the clues to find the mystery number.

##### Age 5 to 11Challenge Level

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

### Number Differences

##### Age 7 to 11Challenge Level

Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?

### Tumbling Down

##### Age 7 to 11Challenge Level

Watch this animation. What do you see? Can you explain why this happens?

### Curious Number

##### Age 7 to 11Challenge Level

Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?

### Consecutive Numbers

##### Age 7 to 14Challenge Level

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

### Subtraction Surpriselive

##### Age 7 to 14Challenge Level

Try out some calculations. Are you surprised by the results?

### Three Neighbours

##### Age 7 to 14Challenge Level

Take three consecutive numbers and add them together. What do you notice?