Frederic has 80 pounds of potatoes. He puts some of the potatoes in bags. The line plot shows the weights of the bags of potatoes. He puts the rest of the potatoes in crates.
How many more pounds of potatoes are in bags than in crates? Move numbers to the boxes to show the answer. If there is no whole numb place a 0 in the first box.
Bags: 20, 30, 40
Crates: 0, 0, 20
Answer: 40