Class name score
Fill in the blanks.
1, the integer part of a decimal is the largest two digits, one thousandth of the decimal part is 4, the percentile is the smallest prime number, the decimal place is 0, and this number is (). Using rounding method to omit the mantissa behind the percentile to find the divisor is ()
2, 0.36, 36, -7.5,-1, 0, these five numbers are () in descending order.
3, 6: 40 = (); 85000ml = () L = () m3
4. The original price of one yuan computer is () yuan after the price of each computer is reduced by 12%.
5. Any triangle has at least () acute angles and at most () obtuse angles.
6. It is known that X and Y (neither of which is 0) can satisfy x= y, then X and Y are in direct proportion (), and X: Y = (): ().
7. It takes () blocks to stack a small cube with a volume of 1dm3 into a large cube with a volume of 1 dm3. If these cubes are lined up next to each other, their length is () meters.
8.A number is B number, which is less than B number ()%, and B number is greater than A number ()%.
9. RMB 172 consists of at least () banknotes.
10. The side length of the cube is 12 cm. Cut it into the largest cylinder. The volume of the cylinder is () cm3, and then the cylinder is cut into the largest cone, and the volume of the cone is () cm3.
Second, judge.
1, any odd number plus 1 must be a multiple of 2. ( )
2. Because the multiple of 9 must be a multiple of 3, the multiple of 3 must also be a multiple of 9. ( )
3. Divide 120 into three parts on average, that is, distribute it according to the ratio of 1: 1. ( )
4. The volume of the cone is equal to the volume of the cylinder. ( )
5. If the radius-length ratio of two circles is 1: 2, then their area ratio is also 1: 2. ( )
Third, choose.
1, indicating the change of quantity, and () should be selected.
A, bar chart b, line chart c, fan chart
2. In the figure below, () is the expansion of the cube.
A B C D
3, the following four quadrilateral opposites, () is different from the other three.
A B C D
4. Three people race on the same road, 0.2 points, b and C 13 seconds ... () is the fastest.
A，A B，B C，C
5. A rectangle with a length of 4 cm and a width of 3 cm is enlarged to 1: 3, and the graphic area obtained is () square cm.
a、 12 B、36 C、 108
Fourth, calculation
1, write directly.
1÷ = × = + = 2- = 4.2×0.5=
6.4-3.25= 9.3÷0.03= 44÷ = ÷2÷ = 9― ― =
2. off-type calculation can be simple and convenient.
4.2- 1.38+5.8-3.62 0. 125×0.25×32
2÷ - ÷2 90.5×99+90.5
3. Solve the equation (proportion).
4x+3×0.7=6.5 x:8= : 1
Fifth, practical operation.
Can you draw the other half according to the symmetry axis?
Sixth, solve the problem. (1 ~ 3 questions only count as one line, and the rest count as one line)
1. This clothing factory produced 2500 sets of clothes in the first quarter, and the output in the second quarter was more than that in the first quarter. How many more sets of clothes were produced in the second quarter than in the first quarter?
2. The road team built a road with a length of 1200m. It has been repaired, but how many meters are left?
A gymnastics team has 60 male players, more than female players. How many women are there in this team?
4. The warehouse has 150 tons of steel, accounting for 20% of the total steel used for the first time and the total steel used for the second time. How many tons of steel are left?
Elephants can run 35 kilometers per hour at the fastest, 20 kilometers less than cheetahs. How many kilometers can a cheetah run per hour at the earliest? (column equation solution)
6. A car with a self-weight of 2.5 tons, equipped with four machines each weighing 1800 kg, has to pass through a cement bridge with limited load 10 ton. Excuse me: Can you pass safely? Please calculate the description.
7. It takes Xiaoming 2 hours to go to the amusement park from home through the museum by bike. If he rides his bike directly from home to the amusement park at the same speed, how long can he save?
8. A rectangular pool with a length of 20m, a width of15m and a depth of 2m. Q:
(1) The floor space of the swimming pool.
(2) The wall and bottom of the pool are plastered with cement to obtain the cement surface area.
(3) How many tons of oil can this tank with a weight of 0.85 tons per cubic meter store?
9. Cast a cubic iron block with a side length of 10 cm into a conical iron block with a bottom diameter of 20 cm. What is the height of this tapered iron block? (Numbers are reserved as integers)
10. Observe the picture below and answer the questions.
(1) If the population is represented by the whole graph, which sector represents 25% of the population?
(2) What is the sum of the percentages of each part in the diagram?
(3) If the whole map represents the number of Yucai primary schools (* *1000), how many people does plate B represent?
(4) If Fan A represents 90 hectares of wheat fields, how many hectares of wheat fields does Fan C represent?