Being Collaborative - Primary Number

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

A task which depends on members of the group noticing the needs of others and responding.

Here are some short problems for you to try. Talk to your friends about how you work them out.

"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?

Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

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

Are these statements relating to odd and even numbers always true, sometimes true or never true?

A task which depends on members of the group noticing the needs of others and responding.

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

Can you find two butterflies to go on each flower so that the numbers on each pair of butterflies adds to the number on their flower?

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?

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

How many different shaped boxes can you design for 36 sweets in one layer? Can you arrange the sweets so that no sweets of the same colour are next to each other in any direction?

Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?

In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?

This group activity will encourage you to share calculation strategies and to think about which strategy might be the most efficient.

What happens when you add three numbers together? Will your answer be odd or even? How do you know?

Tom and Ben visited Numberland. Use the maps to work out the number of points each of their routes scores.

Are these statements always true, sometimes true or never true?

Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.

Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?

Can you find different ways of showing the same fraction? Try this matching game and see.

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

Choose four different digits from 1-9 and put one in each box so that the resulting four two-digit numbers add to a total of 100.

A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.

What do the numbers shaded in blue on this hundred square have in common? What do you notice about the pink numbers? How about the shaded numbers in the other squares?

Can you use addition and subtraction to answer these questions about real-life distances?

On my calculator I divided one whole number by another whole number and got the answer 3.125. If the numbers are both under 50, what are they?