2. The two adjacent sides of an isosceles right triangle are 8m and 5m respectively. What's its circumference?
What is the circumference of an isosceles triangle surrounded by strips of 3.20 decimeters and 50 decimeters?
The top angle of isosceles triangle is half of the bottom angle. What are the top and bottom angles of this triangle?
5. equilateral triangles and squares have equal perimeters. The side length of a square is 12 cm. What is the side length of an equilateral triangle?
6. A regular triangular flower bed was built in the happy community, and 15 pots of chrysanthemums were placed on both sides of the flower bed (one pot at each vertex). How many pots are put in a * * *?
7. The two straight lines A and B in the picture below are parallel to each other. Are the heights on the bottom sides of the following four triangles equal in length? Why?
8. The capacity of a bottle of juice is 650ml. How many milliliters is there in a box of juice?
9. Sun Jun poured 1 liter of milk into two identical cups. If the milk in each cup is 300 ml, how many ml of milk is left in the bottle?
10. There are about 5 drops in a millilitre of water, and there are 50 people in the class. How many milliliters 1 drop of water does each person save every day?
11.6 June 14 is World Blood Donation Day. At noon this day, 320 people in a city participated in voluntary blood donation. Voluntary blood donors generally donate 200 ml each time. How many liters is the blood donation?
12. A cold medicine, a bottle of liquid medicine 100 ml, with a dose reminder on it (as shown in the following table). Xiaojun 10 years old. He drank at least one bottle of medicine, and how many times at most?
13.93 The current price of gasoline is about 7 yuan per liter. If a taxi uses 20 liters of gasoline a day, how much will it cost per month (calculated by 30 days)?
14. The school organizes students to participate in tree planting activities. There are 72 plants planted in the low grade, the number of plants planted in the middle grade is three times that of the low grade, and the number of plants planted in the high grade is 20 more than the sum of the plants planted in the middle and lower grades. How many trees are planted in the senior grades?
15. The fruit shop sent 625 kilograms of bananas and 480 kilograms of oranges. Bananas are 25 kg in a basket and oranges are 20 kg in a basket. How many baskets are bananas more than oranges?
16. There are 30 pens in the stationery store, and there are 12 ballpoint pens that are three times more than pens. How many ballpoint pens are there than pens?
17. The vehicle factory wants to produce 1440 tricycles. Originally planned to produce 60 tricycles a day, 80 tricycles were actually produced every day. Can you finish it a few days in advance?
18. Uncle Wang bought a laptop by installment. Make a down payment of 3,000 yuan, and then pay back 245 yuan every month, and pay back * * * 12 months. If you pay at one time, you only need to pay 5200 yuan. How much more does it cost to pay by installment than by lump sum?
19. Xiaojun reads story books, reading 25 pages every day. After reading for five days, he read five more pages, which is exactly half of the book. How many pages are there in this book?
20. There are a bunch of pears and a bunch of peaches with the same weight. Pears sell 17kg, peaches sell 4 1kg. The remaining pears weigh three times as much as the remaining peaches. How many kilograms of pears are there?
2 1. Wang Xiaoliang walks from home to the library to borrow books. Walk every minute/kloc-0.05 meters, and walk to the library in about 28 minutes. How far is his home from the library? (estimated)
22. The speed of sound is 340 meters per second. There is a waist drum team performing in the square. /kloc-What is the sound propagation distance after 0/8 seconds?
There are three classes in Grade Five. There are 45 students in Class One, 48 students in Class Two and 46 students in Class Three. This semester, the school organized social practice activities, and everyone paid 80 yuan's activity fee. How much does this activity cost?
24. Wang planted 125 trees on the hillside last year, and the number of trees planned to be planted this year is 40 times less than last year. How many trees are planned to be planted this year?
25. The experimental primary school bought 78 sets of school uniforms of the same size, including 95 yuan for each coat and 80 yuan for each pair of trousers. How much did you spend on these school uniforms?
26. Zhang Ping plans to travel to Beijing in August. The estimated expenditure is as follows:
Round-trip train ticket (RMB), food (RMB/day), accommodation (RMB/day), tickets and shopping (RMB/day)
55040 120200
If you stay on the train for 2 days, you have to call 15 days.
(1) Please calculate how much the tickets and shopping will cost.
(2) How much does the meal cost?
Reference answer:
1. 150÷3=50 (cm)
The length of each side of this equilateral triangle is 50 cm.
2.8+5+5 = 18 (m)
A: Its circumference is18m.
3.20+50+50 = 120 (decimeter)
Answer: The circumference of an isosceles triangle is 120 decimeter.
4.180 ÷ (1+2+2) = 36 36× 2 = 72 (times)
A: The top angle of this triangle is 36 and the bottom angle is 72.
5. 12×4÷3= 16 (cm)
Answer: The length of an equilateral triangle is 16 cm.
6. 15× 3-3 = 42 (basin)
A * * * put 42 pots.
7.a: These heights are equal in length. Because the height on the base of these four triangles is the distance between this group of parallel lines, and the distance between parallel lines is equal everywhere.
8.650× 12=7800 (ml)
A: A box of this juice weighs 7800 ml.
9. 1L = 1000ml
1000-300× 2 = 400 ml
There is still 400 ml of milk in the bottle.
10.50÷5= 10 (ml)
A: Yes 10 ml.
1 1.320×200=64000 (ml)
64000ml = 64L
A: The blood donation is 64 liters.
12. (1)100 ÷12 ≈ 8 (times)
It will take him at least eight times to finish a bottle of medicine.
(2) 100÷8≈ 12 (times)
A: It takes him 12 times to finish a bottle of medicine.
13.7×20×30=4200 (yuan)
A: 4,200 yuan a month.
14.72+72× 3+20 = 308 (tree)
A: 308 trees were planted in the senior grade.
15.625/25-480/20 =1(basket)
A: There are more bananas than oranges 1 basket.
16.30× 3+ 12-30 = 72 (branch)
A: There are 72 more ballpoint pens than pens.
17.1440 ÷ 60-1440 ÷ 80 = 6 (days)
A: It can be completed six days in advance.
18.300+245×12-5200 = 740 (yuan)
A: Installment payment costs more 740 yuan than lump sum payment.
19.(25× 5+5 )× 2 = 260 pages
This book has 260 pages.
20. (41-17) ÷ (3-1) × 3 = 36 (kg)
There used to be 36 kilograms of pears.
21.105× 28 ≈100× 30 = 3000 (m)
3000 meters =3 kilometers
His home is about 3 kilometers away from the library.
22.340× 18=6 120 (m)
A: The sound propagation distance is 6120m.
23.45+48+46 = 139 (person)
139× 80 =11120 (yuan)
A: The cost of this activity is 1 1 120 yuan.
24.125× 6-40 = 750-40 = 710 (tree)
A: It is planned to plant 7 10 trees this year.
25.(95+80) × 78 = 13650 (yuan)
A: It cost 13650 yuan to buy these school uniforms.
26. (1) 200×15 = 3000 (yuan)
A: Tickets and shopping cost 3,000 yuan.
(2) (15+2) × 40 = 680 (yuan)
A: We need food, 680 yuan.
Are there any application questions and answers in the second volume of grade four? Urgent! Come on, 1. An engineering team builds 85 meters of roads every day. According to this calculation, how many meters will the four engineering teams build roads in seven days? 4( 1)85×4×7=2380 (m) (2)4×7×85=2380 (m)
The five workshops of the electric fan factory produced 2250 electric fans in 30 days. How many electric fans does each workshop produce on average every day? (Check after answering) (1)2250/(5×30) = 15 (Taiwan Province) (2)2250/5/30= 15 (Taiwan Province)
3. Processing 49 parts per hour, and Master Zhang processing 54 parts per hour, each working 8 hours. How many roles did Li Shifu play less than Zhang? (1) 54× 8-49× 8 = 40 (pieces) (2) (54-49) × 8 = 40 (pieces)
The fruit shop brought 25 baskets of apples and pears, each with 6 kilograms of apples and 8 kilograms of pears. How many kilograms are apples and pears? (1)25×6+25×8=350 (kg) (2)25×(6+8)=350 (kg)
5. When I participated in planting trees in spring, 52 people went to the fifth grade and each planted 26 trees; In the fourth grade, 48 people each planted 25 trees. How many more trees were planted in the fifth grade than in the fourth grade? 52× 26-48× 25 = 152 (tree)
6. The school held a sports meeting, with 45 participants in the third grade. The number of participants in grade four is three times that in grade three, and the number of participants in grade five is more than the total number of participants in grades three and four 15. How many people took part in the competition in the fifth grade? 45×3= 135 (person)135+45+15 =195 (person)
There are 46 cocks in the chicken farm, and 20 hens are 25 times less than cocks. How many chickens are there in the chicken farm? 46×25-20= 1 105 (only)105+46 =11(only)
8. The number of Young Pioneers in different grades in a school is as follows: none in grade one, 36 in grade two, 97 in grade three, 254 in grade four 185, 238 in grade six. How many young pioneers are there in each grade in the school on average? (36+97+185+254+238)/5 =162 (person)
9. A primary school student spends 40.5 yuan to repair a desk and chair, but 3.7 yuan spends less on binding books than repairing desks and chairs. How much did it cost to repair tables and chairs and bind books? 40.5—3.7=36.8 (yuan) 36.8+40.5=77.3 (yuan)
10. The surface area of the earth is 5 10/00000 square kilometers, of which the land area is1490000 square kilometers. How many tens of thousands of square kilometers is the ocean area more than the land area? 5.1-1.49 = 3.61(km2) 3.61-1.49 = 2.12 (km2).
1 1. There are 24 hens in Jia Xiaoli's family, more than cocks 18. How many times is the hen? 24- 18=6 (only) 24/6=4
12. A canal with a length of 1200m in Wangcun was completed 10 days ago, and there are still 480m left to be repaired. How many meters are repaired on average every day? 1200-480=720 (m)
13. A county wants to build a highway, which has been built for 20 days, with an average of 350 meters a day and 800 meters left. How long is this road? 20×350+800=7800 (meter)
14. The store delivered 300 bags of chemical fertilizer of 50kg each, and sold 120 bags. How many kilograms are left? 300× 50- 120× 50 = 9000 (kg)
16. Xiaoming's home is 600 meters away from school, and it takes 10 minutes to walk. According to this calculation, it is1080m from Xiaoming's home to the bookstore. How many minutes does he have to walk? 600/ 10=60 (meters) 1080/60= 18 (minutes)
17. It takes Xiao Fang 60 meters to walk from home to school every minute 14 minutes. If she walks 10 meters per minute, how many minutes will it take? 60× 14=840 (m) 840/(60+ 10)= 12 (min)
18. The voyage from Port A to Port B is 2 10 km. It took six hours for the ship to transport goods from Port A to Port B, 7 kilometers more than going back. How many hours does it take to return? 2 10/6=35 (m) 2 10/(35+7)=5 (hours)
19. The distance between Party A and Party B is 420km. It is planned that a car will travel from A to B for 7 hours and actually travel 70 kilometers. Actually arrived a few hours earlier than planned. 420/70=6 (hours) 7-6 = 1 (hours)
20. The train has traveled 200 kilometers from City A to City B, which is four times the remaining distance. How many kilometers are the two cities apart? 200/4=50 km 200+50=250 km
2 1. A square piece of land with a side length of 300 meters, * * * 36 tons of cabbage, how many tons per hectare on average? 300× 300 =90,000 square meters = 9 hectares 36/9=4 (tons)
22. Uncle Wang fertilizes a paddy field with a length of 800 meters and a width of 400 meters, and fertilizes 250 kilograms per hectare. How many kilograms should a * * * fertilize? 800× 400 =320,000 square meters = 32 hectares = 32× 250 = 8,000 kilograms
Find the answers to the math application questions in the second volume of the fourth grade (Jiangsu Education Edition), and buy the complete answers in the textbooks.
The application problems and answers of equation in the second volume of the fourth grade of primary school are known. α is an acute angle, and Tan (90-α) =, then the degree of α is ()
A.30
b45
C.60
Cao 75
Answer a
10 bag of wheat is calculated as per bag 150 kg. The number of kilograms exceeded is positive, and the number of kilograms insufficient is recorded.
Negative numbers, respectively: -6, -3,-1, -2, +7, +3, +4, -3, -2,+1, compared with the standard mass,
How many kilograms is this 10 bag of wheat over or under? What is the total mass of 10 bag of wheat? The plane of each bag of wheat
How many kilograms is the average mass?
answer
149.8
What do you mean, the fourth grade application problem has an answer? Have you got any pictures? There is an answer to the CET-4 application problem, so you can copy it or do it yourself without copying it.
The second volume of Grade Four (20-5) × 45 ÷ (20-15) =135m.
Therefore, it was originally planned to build roads 135 meters every day.
Hope to adopt. Thank you.
In the second volume of Grade Four, 1 has few application questions. How many chickens and rabbits are in the same cage, with head ***46 and feet *** 128? 2. Chicken and rabbit 100, chicken feet are 20 more than rabbit feet. Q: How many chickens and rabbits are there? 3.* * * Chicken cages and rabbit cages. There are 26 more chickens than rabbits, with 274 feet. How many chickens and rabbits are there? There are 35 chickens and rabbits in the same cage, and there are 94 feet below. How many chickens and rabbits are there in the cage?
The answer to the 28-page application problem of oral arithmetic and mental arithmetic in the second volume of the fourth grade is 25 × 1 1 = 275.
25×33=825
25× 10 1=2525
168 168÷ 100 1= 168336 168
125× 100 1= 125 125
324×2002=648648
72×78=56 16
848848÷4004=2 12
46×44= 1 1352
55× 12=660
All the answers to the second question on page 20 of the second volume of the fourth grade. In urgent need. Four questions! Should I return the car to Cooper or keep it for myself?
Sixth grade math test paper application questions, seeking process and answer! Urgent need! Because there are only five colors, the most extreme case is that all five balls are different in color, but the color of the sixth ball will definitely be the same as the previous one, so at least two balls are the same in color.
Ask again if you don't understand. I wish you progress in your study and go up a storey still higher! (*^__^*)