Looking at the chart, the bar shown for grapes goes up to the number and the bar shown for apples goes up to . The phrase "how many more" means that we are going to subtract to find the difference between the grapes and apples.

If we look at the graph, the bar shown for oranges goes up to . This means that we currently have oranges. If we are going to add more oranges, we can add and to find our answer.