What is 5x 1/2? use any type of model to show

Change the fraction into a decimal, in this question it would be 5 x 0.5 which basically is asking for half of 5 which is 2.5.
You could also rearrange the question so put the fraction first and say what is:
1/2 of 5 which would equal 2.5 this would work for all questions like this. Hope I helped, have a nice day :)

5 times .5
5
 .5

2.5