1, 6045809090 is pronounced as (), and the divisor rounded to ten thousand places is recorded as () ten thousand.

The decimal unit of 2 and 5 is (). If you remove the decimal unit like (), it will become the smallest composite number.

3. At 0. 66% and 0.

.666, the largest number is (), and the smallest number is ().

4. Of the nine numbers from1to 9, () and () are adjacent numbers that are prime numbers, and () is adjacent numbers that are composite numbers.

5, A number =2×3×5, B number =2×5×7, the greatest common divisor of A number and B number is (), and the smallest common multiple is ().

6. Prepare a kind of brine, the weight ratio of salt to water is 1:2, and the salt is the weight of brine.

7. Put two squares with a side length of 5 cm into a rectangle with a circumference of (); The area is ().

8, a cube 6 cm long, its surface area is (). The volume is ().

9. In A ÷ B = 5 ... 3, A and B are expanded three times at the same time, the quotient is (), and the remainder is ().

10, the following table is 1999 Yucai Primary School's book purchase cost statistics.

(1) Fill in the form (2) The average monthly book purchase fee for the whole year is () yuan.

Second, the judgment, the correct "tick", the wrong "x". (6 points)

1, it is easier to see the change of quantity and energy in broken-line statistical chart. ( )

2. Multiply the former term of the ratio and divide the latter term by 2, and the ratio remains unchanged. ( )

3.Decimal is a number less than 1. ( )

4. Two even numbers are definitely not prime numbers. ( )

5. The equation is an equation, but the equation is not necessarily an equation. ( )

6. The quotient of 1 .3 divided by 0.3 is 4 and the remainder is1. ( )

Third, choose the serial number of the correct answer in (). (8 points)

1, the wheel rolls once, and the distance traveled is to find the wheel ().

① Diameter ② Perimeter ③ Area

2. When calculating the volume and volume of rectangular wooden cases, () is the same.

① Calculation formula ② Significance ③ Measurement method

3. The prime factor of decomposition 60 is 60= ().

① 1×2×2×3×5 ②2×2×3×5 ③3×4×5

4. If both number A and number B are not equal to 0, and number A is equal to number B, then ().

① A number > B number ② B number > A number ③ A number = B number

5. the unit of the score is Yes. The sum of all real scores should be ().

①4 ②3 ③3

6. The length of a steel pipe is15m, and the whole length is cut off. According to the formula 15×( 1-), the problem is ().

(1) How many meters are cut off? ② How many meters are left?

(3) How many meters more than the rest? (4) How many meters are left over from the cut?

7. For a batch of corn seeds, the ratio of germinated grains to ungerminated grains is 4: 1, and the germination rate of these seeds is ().

① ②75% ③25% ④80%

8. There are more girls than boys in one class, and the number of boys accounts for () of the whole class.

1, 2, 3, 4. Calculation problem. (3 1) ④

1, a number written directly. (6 points)

25×24= 4.2÷0.2= 12-2=

1.25×= 1÷0.6= 4÷2=

2. Use a simple method to calculate. (6 points) 1

①3.5%×9.9 ②4.62+9.9 ③4×0.6+0.6÷

3. Off-mold calculation. (15)

①2700×(506-499)÷900 ②33.02-( 148.4-90.85)÷2.5

③(

1÷+÷ 1)÷5. 1 ④ 18. 1+(3-0.299÷0.23)× 1

⑤( 1.6×+3.6÷)×

4. Solve the equation. (4 points)

①x \( 1-

5. Column calculation. (6 points)

1, 0.4 less than 20% of a certain number is 7.2. Find a number. (Equation solving)

What is the sum of the difference between 2.0.9 and 0.2 plus 1 divided by l.25?

6. The circumference of the circle below is 25. 12 cm. Find the area of the shaded part. (5 points)

Seven, application questions. (34 points)

1. The construction team dug a canal. It was originally planned to dig 100m every day, and it was completed in 24 days, but it was actually completed 4 days ahead of schedule. How many meters does it actually dig every day?

2. A car traveled from A to B three hours ago 156 km. At this speed, it takes 8 hours to get from A to B. How many kilometers is there between A and B? (Use proportional solution)

3. There are two ribbons, the first one is 6.2 meters long, and the second one is 0.2 meters shorter than the second one. How many meters are the two ribbons?

There is a batch of goods in the shopping mall. On the first day, the total quantity has been shipped. The next day, it was 4 tons more than the total. There are 20 tons left at this time. How many tons are there in this shipment?

5. To build a road, it takes four days for the first construction team and six days for the second construction team. If the two teams repair together, how many days can the road be completed?

6. On the map with the scale of1:4,000,000, the distance between A and B is 20 cm, and two trains start from A and B at the same time. The speed of A train is 55 kilometers per hour and that of B train is 45 kilometers per hour. They will meet in a few hours.

7. A conical rice pile, with a bottom radius of 1 m and a height of 1.5 m, weighs about 600 kg per cubic meter of rice. How many kilograms does this study pile weigh?