Another great Maths skill to practice with your children is learning to add doubles.
You can start by learning all the doubles to 10
E.g. 1+1, 2+2, 3+3 etc until they are automatic.
Once the doubles are embedded then we can use those facts to solve other equations by adding or subtracting 1
e.g. 3+4. If you know 3+3 then you just add 1 more. or if you know 4+4 just take one away.
The next advanced step is to add two digit doubles. 32+32
30 + 30. and 2 + 2
Some games you can play:
https://www.splashlearn.com/math/doubles-facts-games
Memory game - create this game at home.
Deck of Cards game - have a pile of cards (10) - one person places them down between you and the first person to call out the double of that number and slap the card with a their hand or a fly swat (to make it fun) - wins the card. The person with the most cards wins.