Fill in the blanks.
1, 0.9 hours = () minutes 6950g = () kilograms () grams 0.5 1 hectare = () square meters 1.25 square kilometers = () square meters.
2. Form a rectangular frame with a line, with a length of 1.2m and a width of 0.4m Now straighten the sides of this rectangle to form a square with a perimeter of () and an area of (). 3. The three-digit decimal rounded to one percent is about 16.00. The maximum possible number of decimal places is (), and the minimum possible number of decimal places is ().
2.100-(-5.6) × 0.15 = 97.87 (fill in the appropriate number. )
The students visited the Science and Technology Museum. They were arranged in four rows, with the same number of people, with the small army in the second row, the ninth in front and 1 1 person behind. Some people visited the exhibition.
5. The arrangement is as follows. 2 158 graph is (), and there are () graphs belonging to a triangle.
▲▲▲△△ ▲▲▲△△ ▲▲▲△△ … …
6. The sum of numbers A and B is 33. 1 1. If the decimal point of the number A moves one place to the right, which is as big as the number B, then the number A is ().
7, there is a column number, ***7. It is known that the average of these seven numbers is 30, the average of the first four numbers is 35, and the average of the last four numbers is 26, so the fourth number is ().
8. Two people can make two identical toys in two hours. According to this calculation, 10 people can make () such toys in 10 hours.
On Tuesday, March 4th, the construction of a building was officially started, and it was completely completed in 35 days. The completion time is () month () and week ().
10, one wooden pole is provided every 14 meters from one side of the previous road, and 56 wooden poles are provided. Now replace it with cement poles, and you can install one every 35 meters, only () poles will do.
1 1, a piece of paper with a thickness of 1 mm, folded in half, folded in half again ... * * * folded five times, and then the paper became () mm thick.
1, with arrays {1, 2, 3, 4}, {2, 4, 6, 8}, {3, 6, 9, 12}, then the sum of the four numbers of the100th array is ().
2. When a two-digit number is divided by 35 1, the remainder is 2 1, and the minimum value of this two-digit number is (). 4. In 1, 2, 3499 and 500, the number 2 appears () times in a * * * *.
5. A, B and C go to the bank to deposit money. If Party A gives Party B 200 yuan, the money of both parties is the same. If Party B gives Party C 150 yuan, and Party C has more 300 yuan than Party B, who will save more? (), save more () yuan.
6. The canteen has * * * 35 1 bags of rice and flour. If there are 20 bags of rice and 50 bags of flour, there are more bags of rice than flour 1. There used to be () bags of rice and () bags of flour.
7,279 is the sum of four numbers A, B, C and D. If A subtracts 2, B adds 2, C divides 2 and D multiplies 2, then these four numbers are all equal, so A is (), B is (), C is () and D is (). Comparing the ages of the two brothers, the elder brother said, "When I was your age this year, you were only 5 years old." The younger brother said, "When I reach your age this year, you will be 17 years old." My brother is () years old and my brother is () years old.
9. A said to B, "My age is three times that of you." B said to A, "My age after 5 years is the same as your age 1 1 years ago." A is () years old and B is () years old.
10, and the distance between A and B is 2 1 km. At 9 o'clock in the morning, A and B set off from A and B respectively and walked in opposite directions. A will return immediately after arriving at B, and B will return immediately after arriving at A, and meet again at noon 12. At this time, A walked 9 kilometers more than B. A Walk () kilometers per hour.
1 1. The fuel carried by the steamboat takes up to 6 hours. When going downstream, drive at15km/h, and when coming back, drive at12km/h.. This steamboat needs to turn back when it travels () kilometers at most. 12. A ship is sailing between two docks. Sail downstream for 4 hours, sail upstream for 5 hours, and the water speed is 5 kilometers per hour. The ship is sailing at a speed of 80 kilometers per hour in calm water.
13, the total length of a railway bridge is 1200m, it takes 75 seconds for the train to cross the bridge, and it only takes 15s for the train to cross the roadside pole, so the total length of the train is () meters.
14. It takes 25 seconds for a train to pass through a 250m-long tunnel and 23 seconds for a 2 10/0m-long iron bridge. It takes () seconds for this train to get on the wrong train with another train with a length of 320 meters and a speed of 64.8 kilometers per hour.
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15. Snails climb from a dry well net, climb 1 10 cm during the day and drop 40 cm at night. If they want to climb to the wellhead during the day of the fifth day, the well must be at least () cm deep.
16, Teacher Zhou gave the students exercise books, and each student gave seven more. If each student has two more students and one student can't get one, then one * * * has () students and () exercise books. 17, Wang Fei traveled 240 kilometers at a speed of 40 kilometers per hour, and traveled 60 kilometers per hour when returning from the original road. The average speed of going back and forth in Wang Fei is () kilometers per hour.
18, mother squirrel picks 24 pine nuts every day on sunny days, and on rainy days 16. He picked 168 pine nuts for several days, averaging 2 1 pine nuts per day. There are () sunny days these days. 19. Connect 10 pieces of paper with the same length into a paper tape with a length of 3 1 cm. If each joint overlaps 1 cm, the length of each piece of paper is () cm.
20. There is a pastoral area, which is full of pasture and grows at a constant speed every day. Grass in this pastoral area can feed 27 cows for 6 weeks or 23 cows for 9 weeks, so it can feed 2 1 cow for () weeks.
20 teams participated in the table tennis team competition. If the round robin is played, () games are needed. 22. "IMO" is the abbreviation of International Mathematical Olympiad. Write these three letters in three different colors. There are five different colors. According to the above requirements, you can write "IMO" in different colors in ().
23. In a sports meeting, there were 15 people in Class A who participated in the field events, 12 people who participated in the track events, 7 people who participated in the field events and participated in the track events, and 2/kloc-0 people who did not participate in the sports meeting, so there were () people in Class A. There are four balls of different colors in a pocket. If you touch two balls at a time, you must ensure that the results are the same after 10 touches, at least () times.
1. There are two kinds of boats, big and small. The big boat can take six people and the small boat can take four people. There are 46 teachers and students in Class One, Grade Five, just distributed on the 10 ship, and there is no surplus. How many boats and boats are there?
2. The area of a trapezoid is 12.56 square meters, the upper bottom is 1.02 meters, and the height is 3. 14 meters. How long is the base of this trapezoid?
The railway from Tianjin to Jinan is 357 kilometers long. An express train leaves from Tianjin and a local train leaves from Jinan. After meeting for three hours, the average speed of the express train is 79 kilometers per hour, and the average speed of the local train is how many kilometers per hour?
The distance from Huainan to Wuhu is 240 kilometers. At 6: 30 every morning, the bus from Huainan leaves for Wuhu at a speed of 58 kilometers per hour, and the bus from Wuhu leaves for Huainan at a speed of 62 kilometers per hour. When did the two cars meet on the road?
The distance between a and b is 480 kilometers. A car travels from A to B at a speed of 60km/h and returns at a speed of 40km/h.. What is the average speed of this car back and forth?
6. The school bought four desks and nine chairs for 89 1 yuan. It is known that the desk of 1 costs the same as six chairs. How much is each chair and table?
7.30 coins, consisting of 2 cents and 5 cents, * * * is worth 9.9 cents. How many coins are there in each?
8. Turtle crane * * * 100 with 350 feet. How many turtles and cranes are there?
Hope to adopt and wish you progress in your study O(∩_∩)O~