During the year we work hard to learn our number bonds. A sound knowledge of these number facts makes all our maths work much easier.
You can easily work on these with your child at home. Once they develop an understanding ask them to tell you which number goes with a given number to make 10. We like to play this type of game if we are lining up for lunch or waiting for break time.
Once the children have a grasp of these you can add simple questions like, "At the shop I give the shopkeeper 10p and I spend 5p how much change will I get?"