1. The ratio of male workers to female workers is 5︰7. There are four more women than men. How many men and women are there?

2. The ratio of the degrees of the internal angles of a triangle is 2 1 1. What triangle is this according to the angle?

3. The perimeter of a rectangle is 120cm, and the aspect ratio is 1︰4. How many centimeters is the length and width of a rectangle? What is the area?

The ratio of Xiaoming to Xiaohua is 3: 7. If Xiaoming keeps it in 400 yuan again, it will be as much as Xiaohua's. How much money did Xiaoming save?

5. The grain store has rice 125 bags, weighing 5 125 kg. Find the weight of each bag of rice and the ratio of the total weight of rice to the number of rice bags.

Extended data proportion segmentation rule

1) Start with the high order of the dividend, first look at how many digits there are in the dividend, and then try to divide the dividend by the first few digits. If it is smaller than the divisor, divide it by one digit as much as possible;

2) Write quotient on divisor and dividend;

3) The remainder after each division operation must be less than the divisor.

Divider is the law of fractional division of integers;

1) According to the law of integer division, the decimal point of quotient should be aligned with the decimal point of dividend;

2) If there is a remainder at the end of the dividend, fill in zeros after the remainder and continue the division.