If a child is really confused about decimals, converting decimal numnbers into money is a great way to make things clearer. For example: a child may be asked to say how much bigger 1.3 is than 0.9. If they convert these decimals into money (£1.30 and 90p) they may find that they can do this calculation very quickly in their head, getting the answer 40p which they convert back into the decimal, 0.4. Demonstrating that money maths depends on decimal understanding is also an easy way to prove that decimals are actually useful in real life!
Once you have built an understanding of the concept of division you can try using these division worksheets. When teaching early division you should also discuss that division has an opposite. Discuss how division is about separating sets, while the opposite type of math, called multiplication is about combining sets. Explore this relationship with your child as it will be important when recalling basic facts to solve division problems. Introduce fact families (e.g. 5 x 3 =15, 3 x 5 = 15, 15 ÷ 3 = 5, 15 ÷ 5 = 3).