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### Advanced mathematics

# Trial and Improvement at KS1

### Five Steps to 50

### Two-digit Targets

### One Big Triangle

### Find the Difference

### Eggs in Baskets

### Four Colours

### Heads and Feet

### Starfish Spotting

### The Brown Family

### The Tall Tower

### 4 Dom

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Simply 'having a go' is a great way to make a start on a mathematical problem. Whatever happens, you will have learnt more about the situation and can then tweak your approach. These activities all lend themselves to this 'trial and improvement' way of working.

This collection is one of our Primary Curriculum collections - tasks that are grouped by topic.

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

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

Make one big triangle so the numbers that touch on the small triangles add to 10.

Age 5 to 7

Challenge Level

Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.

Age 5 to 7

Challenge Level

There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. How many eggs are in each basket?

Age 5 to 11

Challenge Level

Kate has eight multilink cubes. She has two red ones, two yellow, two green and two blue. She wants to fit them together to make a cube so that each colour shows on each face just once.

Age 5 to 7

Challenge Level

On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?

Age 5 to 7

Challenge Level

How many starfish could there be on the beach, and how many children, if I can see 28 arms?

Age 5 to 7

Challenge Level

Use the information about Sally and her brother to find out how many children there are in the Brown family.

Age 5 to 7

Challenge Level

As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?

Age 5 to 11

Challenge Level

Use these four dominoes to make a square that has the same number of dots on each side.