Addition and subtraction

This challenge is about finding the difference between numbers which have the same tens digit.

Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?

Which two items of fruit could Kate and Sam choose? Can you order the prices from lowest to highest?

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?

Can you match pairs of cards which show the same amount?

Noah saw 12 legs walk by into the Ark. How many creatures did he see?

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?

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?