## Making 10

Look at the Numicon shapes and find pairs of shapes that make 10. Check that you are correct by placing each pair on top of the ten shape.

What do you notice? What patterns can you see?

Say an addition sentence for each pair e.g. 1 add 9 equals 10.

Write an addition sentence e.g. 1 + 9 = 10.

Say a subtraction sentence e.g. 10 take away 1 equals 9.

Write a subtraction sentence e.g. 10 – 1 = 9.

Play What’s Missing?

Set out your pairs like Digit Dog and Calculating Cat.

Player 1 closes their eyes, Player 2 removes one shape and says “what’s missing?”

Player 1 works out what shape is missing and explains how they know.

For more Numicon activities visit Oxford Owl for Home Maths.

Download and print the free Numicon shapes and the Numicon at Home Activity Kit for Years 1 and 2.

Digit Dog is counting his bones. “One, two, three.” But 3 bones are not enough.

What if Digit Dog found 1 more bone? How many would he have then? How do you know that? Can you convince me?

What if he found 2 more bones?

What if he ate one bone?

What does Digit Dog have to do to make his wish come true? How many more bones does he need? How can you work it out?

Use a five-frame or ten-frame to help learners work out how to make Digit Dog’s wish come true and explain their thinking.

Explore other numbers of bones.