Exploring and noticing

Can you spot the mistake in this video? How would you work out the answer to this calculation?

Order these four calculations from easiest to hardest. How did you decide?

In this activity, shapes can be arranged by changing either the colour or the shape each time. Can you find a way to do it?

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?

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

Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?

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

How many balls of modelling clay and how many straws does it take to make these skeleton shapes?

In Sam and Jill's garden there are two sorts of ladybirds with 7 spots or 4 spots. What numbers of total spots can you make?

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?