calculate

(―+)? 24 [(―2.4)? 2008+8.7? ]?

(―0.2+)? 6? [6? (―)]+6

2. Party A and Party B each deposit 2500 yuan. If Party A deposits in 500 yuan again, Party A's deposit is Party B's. How much did A and B originally save?

3. There are several balls in the bag, among which the flower balls account for the total, and then six flower balls are put into the bag, which is the total number of flower balls. How many balls are there in the bag now?

4. A professional rabbit farmer keeps white, black and gray rabbits, and the number of white rabbits accounts for the total number. The ratio of black rabbit to gray rabbit is 3:5. It is known that black rabbits are 64 less than gray rabbits. How many rabbits do you have for each of the three kinds of rabbits?

There are two kinds of mosquito-repellent incense with different lengths and thicknesses. The short one burns for 8 hours, and the long one burns short. Light two mosquito coils at the same time. After 3 hours, they are exactly the same length. How much is the short mosquito-repellent incense before lighting?

the next day

calculate

[(0.95―0.7)? 0.4? 0. 1]? 5 ? (? 0.6+)? 0.25

(―0.25)? ( 1+) ? [―4.5? (20%+)]

There are red and yellow balls in the schoolbag. The number of red balls is yellow. Take out three yellow balls from the schoolbag. How many red balls do I have to take out to make the number of red balls still yellow?

On Sunday morning, Hong Hong and Lan Lan had a long-distance race. Red and light blue ran 16 km, and the distance red ran was equal to light blue. How many kilometers did Red and Light Blue run?

The water in cylinders A and B weighs 650kg. If you take 50 kilograms of water out of cylinder B, the water in cylinder A is the remaining water in cylinder B. How many kilograms of water are there in cylinders A and B?

Among the students playing games on the playground, there were boys, and then five boys came. At this time, there are as many boys as girls. How many students are playing games on the playground now?

the third day

calculate

(―)? (3―) (―0.75)? (+ 1.24)? 16.35+

(? +)? (8.6? )? (0.5? )―0.0 1? )

There are two extracurricular activity groups, A and B. The number of people in Group A is Group B, and then 16 people are transferred from Group B to Group A. At this time, the number of people in Group B is Group A. How many people are there in Group A and Group B?

There are 800 apple trees and pear trees in the orchard, among which apple trees account for the total. Later, some apple trees were planted. At this time, apple trees accounted for the total. How many apple trees were planted later?

In March, students of Grade Four, Grade Five and Grade Six in Yucai Primary School went to plant trees. The number of trees planted in the fourth grade accounts for the total number, and the ratio of trees planted in the fifth and sixth grades is 3:5. It is understood that the sixth grade has planted 80 more trees than the fifth grade. How many trees are there in three grades?

There are two candles with different lengths and thicknesses. The short one takes 9 hours, and the long one takes the short one. Two candles are lit at the same time, and after 2 hours, the length is exactly the same. What fraction of the length is short before it is lit?

The fourth day

calculate

1―(―3.5)? 9 8[ 1? (―)]

[(30―9.8)? 0.6―2. 12]? 10 (+++)? ( 1―)

The toffee in the candy box accounted for the total number of sweets, and later 12 toffee was put into the box, at this time, the toffee accounted for the total number of sweets. How many sweets are there in the box now?

3. The number A is the number B. If the number A is increased by 3, if the number A is still the number B, how much should the number B be increased?

4. There are two barrels of oil, A and B. A is more than B 12 kg. After taking 5 kg per barrel, A equals B. How many kilograms are there in two barrels of oil?

There are 6 15 students in the fourth, fifth and sixth grades of primary schools in Yu Ying. It is known that sixth-grade students are equal to fifth-grade students and fourth-grade students. How many students are there in each of these three grades?

Fifth day

calculate

[(+ 1.5)? ―]? 2.8 ( 1? 1+ 1? 1)―0?

5―[―( 1.5+)]? 0.2 +(+? )?

The car travels from a to b at a speed of 80 kilometers per hour. When I came back, in order to catch up with the time, the speed per hour increased by 20%. So, what is the average speed of going back and forth every hour?

Wang, a big grain grower, estimates that the germination rate of some wheat seeds is as high as 80%. In order to make the seedlings grow together, we should prepare more seeds.

4. An enterprise has two cuboid reservoirs, A and B, and the water in A is injected into B at the speed of 6 cubic meters per hour. The relationship between water depth y (m) and water injection time x (h) in reservoirs A and B is shown in the figure. Answer the following questions with pictures:

(1) How long does it take to inject water? The water storage capacity of reservoir A and reservoir B is the same.

Find out how long it takes to inject water, and the water depth of reservoir A and reservoir B is the same;

sixth day

calculate

12? (+)+5? 17 +? +?

(+0.8+)? 1.25 [+(5.4―)? ]?

A batch of coal was brought into the canteen, and 40% of the coal was used, and the rest was more than 200 kilograms more than used. How many kilograms of coal was first brought into the canteen?

A real estate developer spent 2 1 10,000 yuan to buy a piece of land for the construction of affordable housing for residents. Assuming that the cost per square meter of residential buildings is 900 yuan, how many square meters must the building area exceed to control the building cost below 2,500 yuan per square meter?

A group of students took part in the darts competition, and each student got three darts. The number (1) is the target, and the numbers 4 and 1 on the target indicate a hit.

The score of the target area is 0 if the target is not hit. Figure (2) is the score statistics of this competition. The first network of new curriculum standards

(1) There are () students in the darts competition.

(2) The average score of all the students participating in the darts competition is ().

(3) Three darts have () people miss the target.

(4) Only one dart hit the target with () people.

(5) Only two darts hit the target with () people.

(6) There are () people who hit the target with all three darts.

Seventh day

calculate

(―) [―(+)? 4.5]? (+)

(―20? )? ―(0.875? + 1? 6.5? 8)?

2. A rectangular glass container with a length of 20cm, a width of10cm and a height of 20cm contains some red solution. Xiao Ming wants to know the depth of the solution. He inserted a rectangular wooden strip with a bottom edge of 5 cm and a length of 1 m vertically into the bottom of the container. After taking it out, he measured it, and the red part of the wooden strip was 16 cm long. How deep is the red solution in the original container?

3. How much does a county know? Ten, one? During the National Day, the relevant departments randomly investigated the permanent population of 1.8 million, and drew the following statistical chart according to the survey results:

According to the above information, answer the following questions:

(1) Complete the bar chart and directly fill in the percentage of people whose main purpose is to collect development information in the fan chart;

(2) If this county has a permanent population of * * * 450,000, please estimate the number of permanent residents in this county. Ten, one? The number of people who traveled to collect development information during this period;

(3) If there are ten counties or one county? There are 72,800 people on vacation during the period, so how many people in the permanent population of the county don't travel?

Eighth day

calculate

? [―(+)? ] 3? [4? (―)]+4

? (―? )? 8[ 1? (―)]

[ 10.8―(0.24? +)]? [ 19+ 1.9? ( 1.9― 1.9)]? 0.38

2. The farmer took a few kilograms of self-produced potatoes to the city to sell. He brought some small change for convenience. After selling some at the market price, he sold it at a reduced price. The relationship between the number of kilograms of potatoes sold and the amount of money (including change) in his hand is shown in the figure. Answer the following questions with pictures.

(1) How many changes have farmers brought?

Find out the price per kilogram of potatoes before the price reduction.

(3) After reducing the price, he sold the surplus potatoes in 0.4 yuan per kilogram. At this point, his money (including change) is 26 yuan. How many kilograms of potatoes did he bring?

the ninth day

calculate

[(+―0.375)? 375]? 3 ? (+)―0. 125? 0.08

? [? ( 1? 2.4)? ] 4.5? 0.24? [45? (0.2+ 1.8)]

2. The purchase price of a commodity is 1000 yuan, and the selling price is 2000 yuan. Because of the poor sales, the store decided to sell it at a discount.

But to ensure that the profit is not less than 50%, how much discount can the store give at most?

4. Two cars, A and B, start from A at the same time and drive to B at the same speed. A car arrives at B first, stops at 1 hour, and then returns at the same speed until the two cars meet. B car is 60 kilometers per hour. The following figure shows the relationship between the distance y (kilometers) between two cars and the driving time x (hours) of B car. (65438

(2) Please fill in the correct values in the brackets in the figure to find out the driving speed of car A from A to B;

(3) Find the speed of car A when it returns and the distance between car A and car B. 。

Tenth day

calculate

(―? )? (+) (2.8―2.8? 0.7)? (0.6+0.52)

(8.4? +3.7? )? 0.07 (0. 1―0. 1? 0)? (3? ―? 3)

The original price of a commodity in 80 yuan is increased by 10%, and then decreased by 10%. What's the current price of this commodity?

A city charges a monthly water fee according to the following regulations: if the water consumption exceeds 6 tons, it will be charged per ton 1.2 yuan; If it exceeds 6 tons, the part that does not exceed will still be charged as 1.2 yuan, and the part that exceeds will be charged as per ton of 2 yuan. If the average water fee of a user in May is per ton 1.4 yuan, how much will the user pay in May?

20 10 hongxing amusement park invested 6600 yuan for maintenance site, installation facilities, equipment purchase and other projects. Figure 1 Figure 2 reflects the distribution of investment funds in 20 10 and the annual growth rate of investment funds for equipment purchase since 2008.

(1) According to the information in the figure, we can know that () has the largest total investment in purchasing equipment.

(2) How much money was invested in purchasing equipment in 2009?

(3) If the annual growth rate of 20 1 1 equipment purchase investment is 50%, what is the investment of 201equipment purchase?

Eleventh day

calculate

1、 19.98? 37- 199.8? 1.9+ 1998? 0.82 2 (5+4)? +0.6? (4+5)

3、? ( 1-? )+ 4、 ? (4.85? -3.6+6. 15? 3)

Second, operational issues.

1. There is a round hole on the rectangular steel plate. Please use a straight line to divide it into two pieces with equal area and briefly explain the operation method.

Operation method:

2. The three sides of the right triangle ABC are 3cm, 4cm and 5cm respectively. Rotate this triangle 90 degrees counterclockwise around point A. ..

(1) Draw the rotated graph.

(2) What is the area swept by this triangle?

B

C A

3. As shown in the figure, the shaded part on the left is square, occupying a circular area, and the shaded part on the right is triangular, occupying a square area. The area ratio of circle, square and triangle is ().

On the twelfth day of Christmas

Calculation:

1、 7.5? 8+0.26? 4-24.8

How many triangles can 45 matchsticks make?

2. Enlarge the figure on the left below to 4 times the area of the original figure, and draw it on the grid paper on the right, drawing a diagonal shadow.

The thirteenth day? Day 15

Comprehensive training

Fill in the blanks:

4. 12 hour = () sub-hectare = () hectare () square meter

There are 1 g, 3 g and 7 g, and you can weigh () objects with different weights on the balance.

The decimal point of a number is shifted one place to the right, which is 59.94 larger than the original number, which is ().

△, ○ and □ respectively represent three different numbers, and △ +△ +△ = ○+○, ○+○ = □+□

△+○+○+□=60。 Then △+○ +□ = ().

An adult breathes 16 times per minute on average, inhaling 500 cubic centimeters of air each time. Q: He inhaled () cubic meters of air every day and night.

6. Tongue twister: There are hundreds of contestants, and Xiao Ming is the youngest. Want to know how old he is, please look at the tongue twister: Age plus age, age minus age, age times age, age divided by age; All of them add up to exactly one hundred. ? Please calculate it. Xiaoming is () years old this year.

7. A cuboid is twice as long as it is wide, and its width and height are equal. The sum of all sides is 48 cm. The cuboid has a surface area of () and a volume of ().

8. When the time of the alarm clock is 4: 25, the included angle formed by the minute hand and the hour hand is ().

9、A※B=A？ (A+B), if 2※(3※X)=52, then X= () in the formula is not valid.

10. In the morning, Beibei and her father ran around the garden in front of the building from 6: 50 to 7: 05. Dad ran 12 laps, and Beibei ran 8 laps. Beibei runs longer than her father (); The distance between Beibei and her father is (); Beibei and her father run faster than ().

1 1, as shown:

12. My brother and sister are walking around the pool with their backs to the same place in a circular pool with a circumference of 30 meters. Brother walks 1.3 meters per second, and sister walks 1.2 meters per second. When they met at 10, my sister had to go () to get back to the starting point.

Second, the calculation:

1.(4.92++ 1.08+)? (- 1. 125+ 1)

Age except age; All of them add up to exactly one hundred. ? Please calculate it. Xiaoming is () years old this year.

7. A cuboid is twice as long as it is wide, and its width and height are equal. The sum of all sides is 48 cm. The cuboid has a surface area of () and a volume of ().

8. When the time of the alarm clock is 4: 25, the included angle formed by the minute hand and the hour hand is ().

9、A※B=A？ (A+B), if 2※(3※X)=52, then X= () in the formula is not valid.

10. In the morning, Beibei and her father ran around the garden in front of the building from 6: 50 to 7: 05. Dad ran 12 laps, and Beibei ran 8 laps. Beibei runs longer than her father (); Beibei and her father run more than (); Beibei and her father run faster than ().

1 1, as shown:

12. My brother and sister are walking around the pool with their backs to the same place in a circular pool with a circumference of 30 meters. Brother walks 1.3 meters per second, and sister walks 1.2 meters per second. When they met at 10, my sister had to go () to get back to the starting point.

Third, calculation:

1.(4.92++ 1.08+)? (- 1. 125+ 1)

6? [8? (―)]? 6 ? [―(―)]

0.8? [ 13―(3. 12+5.28)] ? ―7+?

Fourth, look at the picture to solve the problem:

There are three docks A, B and C along a river, which are 24,000 m away from B/KLOC-0 and C. Xiao Qiang goes back and forth by boat between A and C, paddles between A and B, and takes an electric boat between B and C. The figures in the following figure show the time when Xiao Qiang arrived at various docks during the round trip. Assuming that the speed of the electric boat is constant in still water, please answer according to the above conditions:

2. Calculation: the speed of ships and electric boats in still water and the speed of water flow.

3. Calculation: When will Xiao Qiang return to Terminal A?

Five, solve the problem:

1, Party A, Party B, Party C and Party D * * * build a section of highway with a length of120m. The roads repaired by Team A belong to the other three teams, the roads repaired by Team B belong to the other three teams, and the roads repaired by Team C belong to the other three teams. How many meters does Team Ding build roads?

Xiaojun's father is a taxi driver. When he left the car on Monday, the odometer showed 35 kilometers. When picking up the car every day, Xiaojun recorded the odometer reading for five days. And I know that Xiaojun's father's car consumes 7.5 liters of fuel per 100 kilometers. (Unit: km)

Monday 162

Tuesday 4 10

Wednesday 745

Thursday 745

Friday 928

How many kilometers has * * * walked these days?

How many kilometers do you drive on average every day?

How many liters does Xiaojun's father's car consume this week?

6. Place a rectangle (1) with a length of 4 cm and a width of 3 cm on a straight line, as shown in the figure below. Its diagonal length is exactly 5 cm. Let this rectangle rotate 90 degrees clockwise around vertex B to reach the position of rectangle (2). Do this three times in a row, where point A reaches point E ... Find the length of the distance that point A passes (pi is calculated as 3).