Have a look at the website http://nzmaths.co.nz/families for some great ideas to support maths learning. Some easy ideas include: Counting the number of knives and forks at the table or reading the prices and the cost of items at the supermarket.
Play games that are based on numbers such as Battleships, Snap, Snakes and Ladders and Monopoly.
When cooking dinner or preparing food ask your child to halve and quarter fruit or sandwiches, measure ingredients or share food equally.