Before you move to multiplication make sure that your child has a good understanding of arrays. Which means that they can make 2 groups of 4, 5 sets of 2. Use desired language. You can also link this skill with counting in 2s, 5s, 3s and 10s, as this will make it way easier!
Think of an 8 as 5 and 3 Double 5 is 10 Double 3 is 6 10+6=16
Good news: x4 is double and double one more time. This means that when you learn x2 you will also know x4!
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Click on the picture to view it on amazon.