1. The integer part of the decimal is the largest two digits, one thousandth of the decimal part is 4, the percentile is the smallest prime number, and the decimal place is 0. This number is (99.024). By rounding the mantissa after the percentile, the approximate number is (99).

2. 1.707, 1.07, 17.7%, 1.7 The order from small to large is (1.07, 1.7,/kloc-0.

3. For a two-digit number, after the number of digits in the ten digits is exchanged with the number of digits in the one digit, the two digits obtained are 27 less than the original number, so there are (countless) qualified two digits.

4.6: 40 = (6.4); 85000ml =( 0.85) m3

5. Each computer with the original price of A yuan will be (A-12%) yuan after the price reduction.

6. Any triangle has at least (2) acute angles and at most (1) external obtuse angles.

7. It is known that X and Y (neither of which is 0) can satisfy X = Y, then X and Y are the ratio of (), and X ∶ Y = (): ().

8.A number is B number, which is less than (3/8)% of B number, and B number is greater than (2/8)% of A number.

9. 172 RMB consists of at least (4) bank notes.

10. Party A, Party B and Party C * * * processed 1000 pieces. The quantity ratio of Party A and Party B is 7∶5, and Party C has completed 64 copies less than Party A and Party B..

2. Judgment: (5 points)

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. ( × )

The diameter of a circle is a straight line. ( √ )

Add 5 to the numerator and denominator of a fraction, and the result is equal to the original number. ( × )

5. If the radius-length ratio of two circles is 1: 2, then their area ratio is also 1: 2. (x) three. Choice: (2 points for each small question, *** 10)

1. indicates the change of quantity, and (b) should be selected.

A. Bar chart B. Line chart C. Fan chart

2. In the figure below, (b) is the expanded diagram of the cube.

A. BC

3. Three people race on the same road, 0.2 points, b and C 13 seconds .. (c) is the fastest. American Broadcasting Corporation.

4. The relationship between the opposite sides of the following four quadrangles (D) is different from the other three. University of California, Los Angeles.

5. The cylinder and the cone have the same height, and the sum of their volumes is 48 cubic decimeters, and the volumes of the cylinder and the cone are respectively (B). A.24 cubic decimeter, 24 square decimeter B.36 cubic decimeter, 12 cubic decimeter C. 12 cubic decimeter, 36 square decimeter.

Fourth, calculation.

1. parting calculation can be simple and convenient. (2 points for each question, ***8 points)

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). (3 points for each question, ***6 points)

4x+3×0.7=6.5

Fifth, practical operation.

Can you draw the other half according to the symmetry axis? (3 points)

Sixth, solve the problem. (1, 2,3, 4 points for each question, and 6 points for the rest)

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?

Elephants can run as fast as 35 kilometers per hour, 20 kilometers less than cheetahs. How many kilometers can a cheetah run per hour at the earliest? (Equation solving)

Our city plans to plant about 840,000 trees this year, and 490,000 trees were planted in the first 35 days. According to this calculation, how many days will it take to complete all the tasks? (Use proportional solution)

A cylindrical glassware with a bottom radius of 6 cm contains some water, and a conical plumb hammer with a height of 9 cm is immersed in the water. When the plumb hammer was taken out of the water, the water level dropped by 0.5 cm. How many square centimeters is the bottom area of this cone?

5. It is known that S △ Doc = 15 cm2 and Bo = BD. Find the area of the trapezoid.

6. Plow a field. On the first day, it was 2 mu more than this piece, and on the second day it was less than the rest 1 mu. At this time, there are still 38 mu of uncultivated land, so how many mu of land is this?

7.A and B are 2 10 km apart on the same river. If the two ships are opposite, they will meet after 2 hours; If the two ships are driving in the same direction, A will catch up with B within 14 hours to find the speed of the two ships.

8. The fruit shop bought 96 peaches and watermelons, sold some peaches and watermelons, and left 29 fruits. How many peaches did the fruit shop get?