1.

2.3 meters 50 cm = () meters

3.5050kg = () tons

4.

5.0.9 square meters = () square centimeters

6.0.6029 Using rounding method to keep two decimal places is about ().

7. 19.95 rounding to one decimal place is about ().

8. () is neither a prime number nor a composite number.

9. () is an even number and a prime number.

10. The minimum multiple of a number is (), the minimum divisor is (), and the maximum divisor is ().

1 1. A multi-digit, its hundreds of millions, tens of millions, tens of thousands and dozens are all 6, and the rest are "0". This number is pronounced (), and the mantissa after 1 100 million is omitted. Write ().

12. A school enrolled 420 students this year, 70 more than last year, and ()% more than last year.

13.round () is more than three times that of (), and is usually called ().

14.

15. A circle has a radius of 3 decimeters, a diameter of (), a circumference of () and an area of ().

Second, oral problems (10)

Third, simple calculation (4 points for each small question *** 12 points)

1.

2.

3.

Fourth, the calculation problem (5 points for each small question *** 15 points)

1.

2.

3.

Verb (abbreviation of verb) narrative question (3 points for each small question *** 6 points)

1. A number is 2.95 more than 37.8. What is four times this number?

2.

Six, application problems (5 points for each small question *** 35 points)

1. Road repair, team A completed it in 8 days, team B 10 days, team A completed it in 3 days, and the remaining teams A and B completed it together. How many days will it take?

A batch of goods is planned to transport 30 tons every day, and the task is completed as scheduled. If the tonnage transported every day is increased to 50 tons, it can be transported in six days, then how many days can the task be completed ahead of schedule? (column synthesis formula solution)

3. Two cars, A and B, set off from two places 270 kilometers apart at the same time and met at 1 hour 30 minutes later. It is known that the speed ratio between car B and car A is 7:8. How many kilometers have these two cars traveled per hour?

4.

Half of this book, how many pages does this extracurricular book have?

4. The No.1 Machine Tool Plant produced 89 1 machine tool this year, an increase of 10% over last year. How many machine tools have been added this year?

6. The picture below shows a parallelogram with an area of 36 square meters. Find the area of the shaded part (unit: meter).

7. Built a canal and walked 380 meters in four days. According to this calculation, it can be completed in seven days. How long is this canal? (Three ways to answer)

Seven, think about the problem. (1 item 2 points, 2 items 3 points, *** 5 points)

1. The sum of triangles () is 180.

2. The central angle is 120, and the sector area is equal to the circle area ().