First, the calculation problem. (42 points)

1, a number written directly. (65438+ 0 point for each small question, ***8 points)

108÷36= 1.2+0.08= -= 1÷=

48×= ÷= 0.375×8= =

2. Use a simple method to calculate. (Write the main process) (2 points for each small question, 8 points for * * *)

18. 15-(3. 15+7.35) 17.5×0.95+0.5×

3. Off-mold calculation. (3 points for each small question, *** 12 points)

① 325-325÷ 13+87 ② 0.9×8-28.35÷4.5

4. Find the unknown X. (2 points for each small question, 6 points for * * *)

①X:= 15:24② 1-=③-= 1.4

5, column comprehensive formula or equation calculation. (4 points for each small question, ***8 points)

(1) What's the difference between the product of three multiplications minus the quotient of division?

(2) If the sum of a number is less than the sum of 28 1, find this number. (solved by equation)

Second, multiple choice questions. Put the serial number of the correct answer in brackets. )

(65438+ 0 points for each grade, ***5 points)

1, side length and area of a square ()

① Direct ratio ② Inverse ratio ③ Out of proportion.

2. 16 and 34 have () common factors.

1 1 22 33 44 5 countless

Put seven red balls and four basketballs of the same size in one pocket. Touch at least () balls in the dark to make sure that the two balls are of different colors.

①3 ② 4 ③ 7 ④ 5 ⑤ 8

4. The ratio of the degrees of the three internal angles of a triangle is 5: 2: 4, and this triangle is ().

① Right triangle ② obtuse triangle ③ acute triangle

5. After cutting the cube with the side length of 1 decimeter into eight equal cubes, the surface area increased by () square decimeter.

① 4 ② 6 ③ 8

Third, judge the question. (The "√" in brackets is correct, and the "×" in brackets is wrong)

(65438+ 0 points for each small question, ***6 points)

1, an integer, which can be positive or negative.

2. The lowest digit of an integer is one digit, and the highest digit of the decimal part is ten digits. ( )

3. The meaning of fractional multiplication is exactly the same as that of integer multiplication. ( )

4. A set of quadrangles with parallel opposite sides is a trapezoid. ( )

5. A parallelogram must have no symmetry axis. ( )

6. Rectangles, squares and circles with equal perimeters have the smallest area. ( )

Fill in the blanks. (2 points for each small question, ***20 points)

1、0.8==20÷( ) = 12: ( ) =( )%

2, 3.25 = () when () points; 3 cubic meters = 500 cubic centimeters () cubic decimeter.

3.6070000835 is pronounced as (), and the number in "ten thousand" is ().

When a commodity is sold at a 60% discount, the price is reduced by ()%.

5. A part is 8 mm long, which is 4 cm when drawn on the drawing. The scale of this picture is ().

6. Three-dimensional graphics are made up of some identical small cubes. The front view is, the left view is, and the top view is, so this three-dimensional view is composed of () small cubes.

7. In a football league, the number of goals scored by the four football teams A, B, C and D is 9, 9, 10 and X respectively. If the mode of this set of data is equal to the average, the median of this set of data is ().

8. Two boys, two girls and four friends stand in a row to take graduation commemorative photos, requiring men and women to be arranged at intervals. There are () ways to stand.

Verb (abbreviation of verb) operation and calculation (*** 14)

1, graphics and transformation (4 points)

(1) Move the boat 5 squares to the right, and then move it 4 squares down to draw the figure of the boat.

(2) The figure of the straight triangle ABC rotated 90 clockwise around the point A. ..

Sixth, the application problem. (***32 points)

1, only the comprehensive formula is listed, and it is not calculated. (2 points × 3 = 6)

A factory dug a cylindrical sewage sedimentation tank with a bottom radius of 20 meters and a depth of 3 meters.

How many square meters does this sedimentation tank cover?

② How many cubic meters of sewage can this sedimentation tank hold at most?

(3) Apply cement to the side and bottom of the pool. What is the cement area?

2. A book has 120 pages. Xiao Ming read the book on the first day. Which page did he start reading the next day? (5 points)

3. A conical sand pile with a bottom area of 25m2 and a height of1.8m.. How many meters can this pile of sand spread on a road 8 meters wide and 5 centimeters thick? (column equation) (5 points)

4. Master and apprentice * * * processed 120 parts, and the number of parts processed by apprentice is master's. How many parts did the master and apprentice process respectively? (5 points)

Buses and trucks leave from A and B relatively simultaneously. The bus travels 50 kilometers per hour, and the speed of the truck is the speed of the bus. After the encounter, the bus will continue to drive for 2 hours to reach B. How many kilometers are there between A and B? (6 points)