Answer:
Explanation:
4 x 100 means you are taking 4 groups of 100, or you are taking 100 groups of 4. Either way, when you take that many groups of the other number and you count it individually afterward, it should equal 400. For example, if you are sorting marbles and you make 4 groups of 100, you will have 400 marbles in all after you make the groups.