2. Two tractors plow the fields together. One tractor plows this field, and the others plow with small tractors. How much of this land has been cultivated by small tractors? How much of this land is cultivated by big tractors instead of small tractors?
A road team built kilometers on the first day, kilometers on the second day and kilometers on the third day. How many kilometers were built in three days?
4, a vegetable field, it grows eggplant, peppers and the rest cucumbers. How many cucumbers are planted in this land?
5. There are three colors of sticks, red, yellow and blue. The red stick is meters longer than the yellow stick, and the blue stick is meters shorter than the yellow stick. How many meters is the difference between the red stick and the blue stick? If the blue stick is meters longer than the yellow stick, how many meters is the difference between the red stick and the blue stick?
6. Before the completion of Nanjing Yangtze River Bridge, it took several hours to cross the Yangtze River by train and ferry, but now it only takes several hours to cross the bridge. How many hours does it save to cross the river now?
7. Two construction teams build a project, with Team A completing the project every day and Team B completing the project every day. How many parts of this project can two engineering teams complete in one day?
8. Woodland Bay is planted on the mountain. It is planned to plant fruit trees, bamboo and pine and cypress, with a total area. What percentage of the total area is planted with fruit trees and bamboo? What percentage of the total area is pine and cypress?
9. The school sent a pile of sand. How many tons does it take to build a wall, how many tons does it take to build a sports ground, and how many tons are left? How many tons does a * * * use? How many tons of sand was there before?
10. Divide six apples of the same size to eight children equally, and each child gets a big piece and a small piece. How is it divided? How much does each child get?
1 1. The coal used in the factory canteen in the first quarter was 13 tons, less than that in the second quarter and more than that in the third quarter. How many tons of coal were used in the third quarter?
12, Wang Ying is one meter tall, one meter shorter than Zhang Li, Hua Qin is one meter shorter than Zhang Li, who is taller, Hua Qin or Wang Yingbi? How high is it?
13, Li Lin drank a glass of milk, then filled it with water, drank another glass, filled it with water, drank half a cup, filled it with water, and finally drank all the cups. Does Li Lin drink more milk or water?
14. Shengli Village built a canal. On the first day, kilometers were built, and on the second day, kilometers were left. How long is the canal after it is completed?
15, build an expressway, the whole road was built on the first day, and the whole road was built on the second day. How much is left in the whole road?
16, a class, students spend several hours doing experiments, teachers spend several hours explaining, and the rest of the time students do their homework independently. Assuming that each class is hours, how many hours does it take students to finish their homework independently?
17, xinhua primary school held a sports meeting, and each person only participated in one event. Grade five students participate in track events, field events and group gymnastics performances. What percentage of the whole grade participated in the group gymnastics performance?
18, a city held a math contest and won several first, second and third prizes. Those who won the first and second prizes accounted for the total number of winners, and those who won the second and third prizes accounted for the total number of winners. What percentage of the total number of people won the second prize?
Second, fractional multiplication.
1. The side length of a square is meters. What's its circumference?
2. How much oil does one kilogram of soybean contain, and how much oil does 100 kilogram of soybean contain? 1 ton of soybeans?
3.( 1) How many tons of coal are used every day and how many tons are used in three days?
(2) A pile of coal is used every day, and how much is used in three days?
A train runs at a speed of 87 kilometers per hour, and it takes one hour from Station A to bilibili. How long is the railway between Station A and bilibili? It takes 30 minutes from bilibili to Station C. How long is the railway from bilibili to Station C?
5. A section of steel is 4 meters long, and 15 such parts have been made. How many meters are left?
6. Shengli Road 1 km, Yan 'an Road is twice as large as Shengli Road. How many kilometers is Yan 'an Road longer than Shengli Road?
7. The area of a rectangular desktop is 1 m2. A square desktop with a side length of meters. How much is the area of rectangular desktop larger than that of square desktop?
8. A factory will assemble 195 machine tools. After six days of assembly, 33 units are still not installed. How many units are installed on average every day? (column equation solution)
9. There are two baskets of apples. The first basket weighs 30 kilograms. If you take kilograms from the first basket and put them in the second basket, the apples in the two baskets weigh the same. How much do two baskets of apples weigh?
10, an object weighing 1 kg on the earth, only one kilogram on the moon. A classmate weighs 36 kilograms. If he reaches the moon, how many kilograms will he weigh less than on the earth?
1 1, there are 44 students in Class One, Grade Five, and the chorus takes up the whole class. How many people join the choir?
12. A duck weighs 3 kilograms and a chicken belongs to a duck. How much does this chicken weigh?
13, a volleyball is priced in 60 yuan, and the price of basketball is volleyball. What is the price of basketball?
14, the road team planned to build a road for 4 kilometers, which has been repaired. How many kilometers have you repaired?
15, a whale is 7 meters long, and the head is occupied. How many kilometers is the whale's head?