1. Fill in the blanks (65438+ 0 for each blank, ***20 for each blank)

1. Write a number () consisting of 8 tens of millions, 9 tens of thousands, 6 thousands and 5 hundreds. Rounding to ten thousand digits is probably ().

2.42: The ratio with the simplest integer is (), and the ratio is ().

The classroom area is about 50 (), and an egg weighs about 50 ().

4. Divide a 3-meter-long iron wire into four sections on average, each section is () of this iron wire, and each section is () meters.

5. Chen Xiao's seat is the fourth column in the fifth row of the classroom, which is represented by several pairs ().

6. Among 3.0 14 and 3. 14%, the maximum number is () and the minimum number is ().

7. If the number of A equals the number of B, then the number of A is 60 and the number of B is ().

8.A = 2× 2× 3, B = 2× 2× 5, the greatest common divisor of A and B is (), and the least common multiple is ().

9. 10L 5ml = () ml 4 hours and 32 minutes = () hours (fill in the score)

10. The ratio of qualified parts to unqualified parts is 19: 1, and the qualified rate of these parts is ().

1 1. The side length of a cubic container is 4 cm. After filling it with water, pour it into another cylindrical container with a depth of 6 cm, and it is just full. The bottom area of this conical container is ().

12. On August 8th this year, the Olympic Games will be held in China, and there are () days in this year.

13. For cylinders and cones with equal volumes, if the height of the cylinder is 3m, the height of the cone is ().

Second, true or false questions (65438+ 0 points for each question, ***5 points)

() 1. When the speed is constant, the distance traveled by the car is inversely proportional to the time.

() 2. Because =, their decimal units are the same.

() 3. One angle of an isosceles triangle is 30, and this triangle is an obtuse triangle.

4.2 tons of cotton is 40% lighter than 4 tons of iron.

() 5. All circles have the same ratio of circumference to diameter.

Three, multiple-choice questions (65438+ 0 points per question, ***5 points)

1. () The statistical chart can not only show the quantity, but also clearly show the change of the quantity.

A, bar b, compound c, dotted line d, sector

2. The following statement is true ().

3 and 5 are both prime numbers. B. Integer is greater than decimal.

The reciprocal of c error score must be less than 1. D, 1.5 is divisible by 0.3.

3. Decompose 36 into prime factors, and the correct one is ()

a、36=6×6 B、36= 1×2×3×2×3

c、36=2×3×2×3 D、2×3×2×3=36

4. In the following equation, () is an equation.

a、2× 12=24× 1 B、6y+5 C、30+4b=50 D、5χ+2

5. On a map, a line segment of 1cm represents the actual distance of 120km, and the scale of this map is ().

a、 120( 1) B、 12000( 1) C、 1200000( 1) D、 1200000( 1)

Four, calculation (***35 points)

1. Write the number directly.

0×740= 0.6×0.6= 5.5+ 1 1.6+4.5= 6.4+3 =

y÷y = 50×60% =×4502÷99≈

2. Formula calculation and checking calculation.

356-35.6= 1502÷5 1=

3. Calculate with recursive equation.

15(4)÷[(7(5)- 14(3))÷4(3)] 0.8+ + +

9.63-(3.65+0.98) 16× 125× 16

4. Solve the ratio and solve the equation.

∶8=0.75∶χ + χ= 5.4χ÷0.4=0.5

V. Operational problems (***5 points)

1. Translate the circle in the left picture to the right, so that the translated circle and the original circle form an axisymmetric figure, and then draw the axis of symmetry.

2. Draw an angle on the square on the right to make its area equal to 15cm2.

Six, solve the problem (***30 points)

1. The school bought a batch of new books, including 124 science and technology books and 19 literature and art books. How many literary books are there?

Xiaoming's family produced 500 Jin of wheat this year, 40% less than rice. How many kilograms of rice are there?

3. It takes 8 days for Team A to complete a project alone, and 4 days for Team B to complete it alone. How many days does it take for two teams to cooperate to complete half of the whole project?

4. Produce a batch of parts. It was originally planned to produce 1260 pieces per day and complete the task in 30 days. Due to the improvement of production technology, the task was completed three days ahead of schedule. How much more is actually produced every day than originally planned?

5. Two cars, A and B, start from two places 654 kilometers apart. Eight hours later, it is still 390 kilometers apart. A ship speed 15 km. What's the speed of the B ship?

6. A 5-meter-high cylindrical pool is filled with water, and the average daily water consumption is 10 ton. After 65,438+00 days, the pool water decreased by 40%. What is the bottom area of this pool? (1 m3 water weight 1 ton. )