Basic Subtraction 4

This is my basic subtraction level 4. The thing that I foud hard was 76 - 37 because it was the hightest number from the rest but I got the answer by going 76 - 30 = 47, 47 - 7 = 40, 40 - 10 = 30, 30 + 9 = 39 and there I had my answer. The thing I found easy was 28 - 15 because it was the smallest one to solve that is why I found it easy to do.