Once the child has rolled the dice and generated a number, ask them to go and get that amount of objects from around the house (could use counters, sticks, socks etc) so that they can work it out practically.
I have rolled the number 5.
Use five socks and lay them out on the floor.
Show them that there are 5 by counting them one-by-one.
Then, take one away. One less that 5 is ... count the socks again. One less than 5 is 4.
Put 5 socks back.
Add another sock. One more than 5 is .... count the socks again. One more than 5 is 6.
Keep repeating :)