1. China conducted the sixth national census on1October 20110. According to statistics, the national population is 1, 370,536,875, which is pronounced as () and rewritten as () with one billion people, with one decimal place.

2. I bought 9 soccer balls of A yuan and paid B yuan. The formula containing letters indicates that the amount to be returned is () yuan.

3、A=2？ 5，B=3？ 5. The greatest common factor of A and B is (), and the smallest common multiple is ().

4, () m2=75dm2 1.3 = () points.

The area of a triangle is constant, and its base is directly proportional to its height.

6、( )? 5=() 10 = 20% discount =( ): 20=( )%

There are 25 boys and 20 girls in the sixth grade. The simplest ratio between boys and the whole class is ().

8. The six faces of the cube represent the numbers 1, 2, 3, 4, 5 and 6 respectively. Throw a cube at will, and the probability that the number up after falling is a composite number is (), and the probability that it is an odd number is ().

9. The actual distance between Party A and Party B is 240 kilometers. If you draw on a map with the scale of 1:8000000, you should draw () cm.

10, the sixth grade students planted 40 seedlings, 5 died, and the survival rate was ().

1 1. The cylinder with the same bottom height is 6 cubic meters larger than the cone, and the volume of the cone is () cubic meters.

Second, multiple choice questions. (Sub-item 2, *** 10)

1, put 13? 6= 19 ? 18 is rewritten as the scale of ().

a . 13: 19 = 6: 18 b . 13: 18 = 19:6 c . 19:6 = 18: 13

The 2.7-meter-long wire is divided into 8 segments on average, each segment accounting for () of the total length.

17

Xiaoying's home is located 30 miles northeast of the school. Then the school is located in Xiaoying's ().

A.60 degrees west of south? B.30 north by east? 30 degrees south by west.

4. There are fewer apple trees than pear trees, so pear trees belong to apple trees ().

54 years

5. Team A and Team B will complete a project in 20 days. It is known that the work efficiency ratio of Team A and Team B is 4: 5, and it takes Team A () days to complete the project alone.

a40 b . 36 c . 45

Three. Calculation (28 points)

1, write the number directly (12 points)

0.56+0.4= 0.6? 0.06= 35 ? 20%= 6-6? 0.5=

13 - 15 = 45? 7 15 = 0.25? 0.4= 25? 15? 0=

234- 199= 1- 1 15 = 4.08? 4= 3+7-3+7=

2. Find the unknown x (8 points)

X-0.75 = 34 12.5:0.25 = X: 1.6

3, calculation, how to calculate as simple as possible. (8 points)

48? 9 13 ? 35? 139 8.5? (6.5+4.8)? 2.6

Four, operational problems (6 points)

Draw pictures as required.

(1) Draw the other half of the small tree with the dotted line as the symmetry axis.

⑵ Move the whole graph 5 squares to the right.

(3) Finally, draw a translation figure and rotate it clockwise by 90 around the lower end of the small tree. The graphics of.

5. Find out the area of the shaded part in the picture on the right. (4 points)

8 cm

Six, solve the problem (5 points for each small problem, ***30 points)

1. Great Wall Primary School has 45 students in Grade 6 and 60 students in Grade 5. The sum of the two grades accounts for 5 12 of the whole school. How many people are there in school?

2. The school bought back 3 15 books. Plan 5: 4 in grade 6. How many books will be distributed in each grade?

Lily planned to finish reading this story book with 180 pages in 9 days, but actually she finished it in 6 days. How many pages does she actually read more than planned every day?

4. Uncle Wang drove from A to B at a speed of 80km/h and arrived at 1.5 hours. It takes two hours to go back the same way. How many kilometers per hour when returning?

5. A cylindrical container with a bottom radius of 10 cm and a height of 15 cm is filled with some water, and the water level is 10 cm. Now put an irregular stone into the container, all the stones will sink into the water, and the water level will rise to 12 cm. What is the volume of this stone in cubic centimeters?

(1) This is a statistical chart ().

(2) Mountains account for ()% of the total area.

Plain basin 19% (3) Plateau covers an area of 960,000 square kilometers, which is the total area of our country.

12% is () ten thousand square kilometers.

The area of the hills is () million square kilometers.

10% (5) The area of plain is ()% more than that of plateau.