The second question is the same as above. Each section is 8 meters long and can be cut into 2 and 5 sections respectively.
The third question,1+2+2+3 = 7/8+5/8 =12/8, 12/8- 1 = 4/8, that is, half of it was repaired the next day.
The fourth question, there is an apple, so there are 22- 1=2 1, 35 oranges, and the common divisor of 2 1 and 35 is 7, that is, there are 7 children.
You are a pupil, aren't you? Is this your homework? I didn't have Baidu when I was a child. . .