1. On the map with the scale of 1: 400000, the distance between Port A and Port B is 9 cm. A cargo ship sailed from Port A to Port B at 24 km/h at 6: 00 in the morning, and the time to arrive at Port B was ().
A, 15 points b, 17 points c, 19 points d and 2 1 minute.
2. It takes 6 minutes to saw a stick into 4 segments, but it takes () minutes to saw this stick into 7 segments.
a、 10 B、 12 C、 14 D、 16
3. After the reform of a workshop, the staff decreased by 20%, the output increased by 20%, and the work efficiency ().
A, increase by 50% B, 40% C and 30% D, the same as before.
4. A, B, C and D finished a job together. A day later, D asked for leave due to illness. As a result, A worked for six days, B worked for five days and C worked for four days. As the price of rest, D gave 48 yuan A, B and C as a reward. If the service charge is calculated by the number of days, the A in the 48 yuan will be divided into () yuan.
a、 18 B、 19.2 C、20 D、32
Fill in the blanks: (4 points for each small question, * * * 32 points)
1, the school carried out tree planting activities, 100 trees survived, 25 trees did not survive, and the survival rate was ().
2. If the weight difference between two barrels of oil is 9 kg, and the 1/5 of barrel A oil is equal to that of barrel B oil, then the weight of barrel B oil is () kg.
3. The difference between two natural numbers is 5, and the difference between their minimum common multiple and maximum common divisor is 203, so the sum of these two numbers is ().
4. The bottom area of the cone is equal to the bottom area of the cylinder. Given that the volume ratio of the cone to the cylinder is 1: 6, and the height of the cone is 4.8 cm, then the height of the cylinder is () cm.
As shown in the picture, the tram goes from station A to station C and then returns. I stopped at Li Li when I went, but I didn't stop when I came back. It was 48 kilometers per hour when I went there, and () kilometers per hour when I came back.
6. In the poker game, Xiao Ming returned to Xiao Liang and asked Xiao Liang to follow the following four steps:
The first step is to divide the cards into three stacks: left, middle and right, with no less than two cards in each stack, and the number of cards in each stack is the same;
Step 2, take out two pieces from the left pile and put them in the middle pile;
Step 3, take one from the right pile and put it in the middle pile;
Step four, if there are several cards in the left pile, take a few cards from the middle pile and put them in the left pile.
At this time, Xiao Ming accurately said the existing number of cards in the middle pile. Do you think the number of cards in the stack is ()?
7. The sum of the top 30 numbers is ().
8. As shown in the figure, the area of the right triangle is12cm2, and the area of the shaded part is ().
Three. Calculation: (5 points for each small question, *** 10)
Four, column calculation: (4 points)
What is the product of 10.2 minus 2.5 divided by 20% and 2?
Verb (abbreviation of verb) Application problem: (***38 points)
1. As we all know, the distance between two adjacent poles is 35 meters. There are 36 telephone poles from Jia Xiaohong to the school gate, and there are 595 meters. How many telephone poles are there? (6 points)
2. The construction team completed a section of road in three days, the first day was 9/ 10 of the second day, and the third day was 6/5 times of the second day. It is known that the third day is 270 meters more than the first day. How long is this road? (6 points)
Athletes are trained to ride motorcycles on the highway at a speed of 90km. When starting, a bus and a motorcycle start at the same time and travel in the same direction. The bus speed is 60 kilometers per hour, and the motorcycle runs 80 kilometers and turns back. On the way, it met a bus. How long after departure?
4. A store bought 2 tons of apples from the apple producing area at a price of 1.20 yuan per kilogram. The distance from the place of origin to the store is 400km, and the freight is per ton of goods 1.50 yuan. If the loss during transportation and sales is 65,438+00%, the store will realize 65,438+05.
In supermarkets A and B, the classmate found that the unit price of his favorite walkman was the same, and so was the unit price of his schoolbag. The sum of the unit price of the walkman and the schoolbag is 452 yuan, and the unit price of the walkman is four times less than that of the schoolbag. 8 yuan. One day, students went to the streets, just in time for business promotion. All the goods in Supermarket A are sold at a 20% discount. Supermarket B returned a shopping voucher to 30 yuan when the whole purchase was over 100 yuan (less than 100 yuan, which is common for shopping vouchers), but he only brought 400 yuan money. If both companies can choose, which one will save more money? Why?
Reference answer
、D、B、A、D
2.80%, 6, 29, 9.6, 76, 5, 30/3 1, 3.42,
Third, 1,1/2; 2、6.3。
4, 9 and 5/8 inches
V, 1, 53; 22,790 meters; 3, 64 kilometers; 4.2.3 yuan; 5.360 yuan; In the supermarket.