Some simple math problems for me to write! All points are given, and the process is clear

To be able to be columnar! Lower grades: 40 pine trees, 45 willow trees; Middle Grade:

54 pine trees and 50 willow trees; Upper grades: 56 pine trees, 60 willow trees. According to the data below question 1

A total of 150 pine trees were planted in the whole school, accounting for (2), and more pine trees were planted in the middle grades than willows (8)% 3There are fewer willow trees planted in the lower grades (25)%4 than in the upper grades, what other valuable math problems can you analyze from the diagram, please write them and solve them! What percentage more willow trees are planted than pine trees in all grades?

155-150) 150= Two road repair teams repairing the road in four days On the first day, the first team repaired 40 meters of the road, and the second team repaired 45 meters; On the second day, the first team repaired 50 meters of the road, and the second team repaired 48 meters of the road; On the third day, the first team repaired 54 meters of the road, and the second team repaired the road 50 meters; On the fourth day, the first team repaired 56 meters of the road, and the second team repaired 60 meters. Q: 1

The first team repaired roads on average (40 + 50 + 54 + 56) 4 = 50 ) meters per day, and the second team repaired roads on average (45 + 48 + 50 + 60) 4 = ) meters per day. 2.The number of meters repaired by the first team on the road in three days is the second day (54 50 = 108%) and the second team repairs more on the fourth day than on the third day (60 50-1 = 20%) Fill in the blanks:

1.The line chart is to represent a certain number of points with a (unit) length, trace each point according to (the number of numbers), and then connect the points in order with (line segments). 2.

A chart can not only represent the number of quantities, but also clearly reflect the increase and decrease of the number of changes, this chart is a (line) chart.

1.A total of pine trees ( ) were planted in the whole school, accounting for ( ) 40 + 54 + 56 = 150 (trees) 150 (45 + 50 + 60 + 150) * 100% is about 49%.

1。Under normal circumstances, the mass of ice with equal volume is 1/10 less than the mass of water. If there is a bucket of ice weighing 9kg, if the volume of the bucket is equal to the volume of the ice, how much does the bucket weigh? 9 [1-1 10] = 9 * 10 9 = 10 [kg].

2。The rice was shipped to the disaster area. It took 4 cars to transport 2/5

What fraction of this batch of rice is taken away by the average truckload? How many truckloads will it take to transport the remaining rice? 2 5 4 = 1 10 [1-2 5] 1 10 = 3 5 * 10 = 6 [car] 3.

In the first half of 2004, China imported about 18.04 million tons of steel, accounting for about 40 of the steel imports in the first half of 2003. (The number of wins is kept as an integer.)

1804 39 40 = 1850 [tons].

According to the results of the fifth national census this year, the two most populous provinces in China are Henan and Shandong, with about 90 million people in Shandong, about 1/46 less than Henan. How many people are there in Henan? 9000 [1-1 46] = 9000 * 46 45 = 9200 [10,000].

I read x pages in the morning, and the book is a total of y pages.

x:（y—x）=1:9

x+x+6):(y—x—x—x—6)=1:3 gives x=12 y=120

The book is 120 pages long.

Read x pages in the morning, unread 9x pages, the book has 10x pages, read x + 6 pages in the afternoon, unread, read (x+6): = 1:3

x=12, the book has 10x=120 pages.

Suppose you read x pages in the morning, what you didn't read is 9x pages, because you read x+6 pages in the afternoon, then the remaining page is 9x-x-6, so the number of pages read is 2x+6 than the remaining 8x-6, which is equal to 1:3, and the solution is x equal to 12, and then 12*10 is the total number of pages.

1) The ratio that can be formed with 1/3:1/2 is (d).

1/3: 1/3

2) 2 cm on the map with insight, indicating the actual distance of 50 km, and its scale is (b).

253) If a:b=c:d, then (a).

Fractions ad = 1

b = c d4) a hail cylinder and a cone, the ratio of height is 1:3, the ratio of their base area is 1:3, and the ratio of the volume of the cylinder to the cone is (d).