仔细观察图1中的各数,你发现了什么有趣的规律吗?根据你发现的规律把图2、图3中的空格填满。我是这样解的。先把图1中每列的前两个数相减:1 2-5=7,7-4=3,5-1=4,这三个差正好分别对应每列中的第三个数;再把每行的前两个数相减:1 2-7=5,5-4=1,7-3=4,这三个差也正好是每行中相对应的第三个数;右下角的4既是上边两行对应两个数的差, If you look closely at each of the numbers in Figure 1, what interesting patterns did you find? Fill the spaces in Figure 2 and Figure 3 with the rules you found. I did that. First subtract the first two numbers of each column in Figure 1: 1 2-5 = 7,7-4 = 3,5-1 = 4, which correspond exactly to the third number in each column; Then subtract the first two numbers of each line: 1 2-7 = 5,5-4 = 1,7-3 = 4, these three differences are also exactly the third number corresponding to each line; right The lower corner of the 4 is not only the difference between the two numbers above the two lines,