Calculation part (5 1%)

1, direct write times: 12%

45.6+ 15.4= 25.25÷25= 0.5-0.05= 1- + =

1.7+3= 63-6.32= 4.37+5.73= 6.8× 100÷0. 1=

4.3÷0.0 1= 7.83×6= 2.4×0.5= 15.4-5.4÷0.54=

2. Vertical calculation: 4%

0.48×0.72 5 1.5÷0.86

(products rounded to two decimal places) (business rounded to one place)

3. Recursive equation calculation (simple calculation is required): 18%

98.35-(8.35+ 14.78) 28.78- 18.59+5 1.22-3 1.4 1

0. 125×2.5×32 8.5×[9.9-( 10-0.56÷5.6)]

6.7×4.8-6.7+67×0.62 2.5 ×(4+0.8)× 12.5

4. Solving equation: 6%

5.2+0.4x = 7.8 5(x-3)÷2 = 20 56-x = 5(x+4)

5. Column synthesis formula or equation solution: 8%

(1)2.4 minus the product of 0.5 times 2, and the difference is divided by 0.7. What is the quotient?

4.8 times a number times 4.2 times this number equals the product of 3.6 and 7.5. Find this number.

6. Find the volume of the assembly (unit: cm): 3%.

Application part (30%)

1. A table is 278 yuan, which is more than 4.5 times that of a chair. How much does it cost to buy a set of such tables and chairs for 8 yuan?

The teacher gave some pencils to some students. If you give each student 65,438+05 pencils, there are still 32 left. If you give each pupil 65,438+09 pencils, it will be over. How many students are there?

3.AB is 880 kilometers apart. Two cars, A and B, start from two places at the same time and drive in opposite directions. Car A travels 50 kilometers per hour and car B travels 60 kilometers per hour. How many hours later, two cars met on the road?

4. Master and apprentice process a batch of parts. Apprentices process 45 parts per hour. He processed 60 parts first, and then the master began to work. Results Three hours later, the master and the apprentice processed the same number of parts. How many parts does the main module process per hour?

In the labor class, Xiao Pang wants to make a pair of rectangular cardboard boxes with lids, which are 6 cm long, 2 cm wide and 4 cm high. Please help him figure out how many square decimetres of cardboard he needs at least. (Ignored at joints)

6. A passenger train and a freight train leave the AB midpoint at the same time. Five hours after the freight train leaves, the passenger train arrives at its destination, and it takes three hours for the freight train to complete the rest of the journey. It is known that passenger trains are faster than freight trains15km per hour. Find the distance from AB to the city.

Conceptual part (19%)

1, true or false: 4%

(1) The longer the unit length of a number is from the origin, the greater the number. ( )

(2) A cube with a length of 6 decimeters has the same volume and surface area. ( )

(3)0 is the smallest natural number. ( )

(4) In a cuboid, if two opposite faces are squares, then the other four faces must be completely equal rectangles. ( )

2. Multiple choice questions: (Write the numbers of the correct answers in brackets) 3%

(1) We call a () to specify the origin, the positive direction, and the unit length is several axes.

A. line B. line segment C. ray D. straight line

(2) At least () identical small cubes can be combined into a big cube.

A.4 B. 8 C. 9 D. 10

(3) Which of the following figures is not an expanded diagram of a cube? ( )

A B C D

3. Fill in the blanks: 12%

(1) In -7,+9,0, -2.8, () is a positive number; () is a non-negative number and () is a natural number.

(2) If the sum of three consecutive natural numbers is 36, then one of them is ().

(3) On the number axis, the one representing the length of 8 units from the origin is ().

(4)2 hours 15 minutes = () hours 125cm3=( )dm3.

(5) The area of a parallelogram with a base length of 20 cm and a height of 4 decimeters is () square decimeter, and the area of a triangle with the same base and height is ().

(6) Make a cube frame with 36 cm long iron wire, and its side length is () cm. If this line is used to make a cuboid frame with a length and width of 4 cm, then the height of this cuboid is () cm.

(7) A three-digit number, and the decimal point between its ten digits and one digit becomes a decimal point; Then subtract this decimal from 10 times to become another decimal. Then add these two decimals, and the sum is 5 1.37, and this three-digit number is ().