Answer :
Sam bought 3 packs of 6 juice boxes how many are there in all?there are 18 juice boxes in all
You could: draw 18 circles then put them into 3 groups of 6.. Then draw a number like. Start from 18 then Jump to he number 9 then jump to the number 3. And explain that there is 6 numbers I between 18-9 and 9-3