Class name score

1. Multiple choice questions: (Please fill in the serial number of the correct answer in brackets) 1 for each question, and ***5.

1. A composite number has at least (c).

A, one factor B, two factors C and three factors

The volume of a bottle of eye drops is 10(B).

a、L B、ml C、dm？

3. Among the following three numbers, the one that is neither prime nor composite is (A).

a、 1 B、2 C、3

4. When two natural numbers are divisible and cannot be divisible, their quotient can be expressed by (a).

A, fraction b, integer c, natural number

A fractional unit of 5. 58 is (c).

a、5 B、 1 C、 18

2. True or false questions: (mark "Y" correctly and "N" incorrectly) each question 1, and ***5.

1. The number of a factor is infinite. (noun)

2. The two symmetrical axes of the rectangle intersect at the O point, and rotate the rectangle around the O point by 180 to make it coincide with the original figure. (Y)

3. a? = a+a+a. (noun)

4. The sum of two prime numbers must be even. (noun)

My mother gave me an apple, and I ate 43 apples in one breath. (noun)

3. Fill in the blanks: (65438+ 0 for each blank, *** 18)

1.4.09dm？ =(4090 )cm？ 5800 ml =(5.8) L.

800dm？ =(0.8 )m？ 7300cm？ =(7.3 )L

886ml=( 886 )cm？ =( 0.886 )dm？

2. In a supermarket, to make a glass counter with a length of 2.3m, a width of 50cm and a height of 1.2m, it is necessary to install angle irons around the counter, and this counter needs (16) meter angle irons.

3. In the following phenomenon, the translation painting "P" is the rotation painting "X".

(1) Xiaohong is pulling the drawer. (P)

(2) The propeller of a moving helicopter. (10)

(3) The second hand on the dial of the quartz clock. (10)

4. Use scores to represent the white part of the picture.

(one quarter) (four ninth) (five eighth)

5. Observe the picture on the right first, and then fill in the blanks.

(1) Figure A rotates 90 clockwise around the "O" point to reach the position of Figure (D);

(2) Figure B rotates clockwise (180) degrees around the "O" point to reach the position of Figure D;

(3) Figure C rotates counterclockwise around the "O" point 180 to reach the position of Figure (a);

The smallest factor of a number is (1).

7. Make a cuboid with five identical cubes, the surface area is reduced by 24 square centimeters, and the surface area of this cuboid is (66) square centimeters.

Fourth, do math. (40 points)

1. Write the number directly. (16)

40× 1.2= 25×0.4 = 6? = 29 ÷18 =-(the result is a score)

2.4×0.5= 1.25×80= 3.6÷0.06= 1÷3= ——

2. Calculate the surface area and volume of a cuboid according to its length, width and height. (13, each blank 2, question 1)

Length, width and high surface area volume

1 3m 1m 2m m？ m？

2 9m 3m 6m m？ m？

3 27m 9m 18m m？ m？

3. Turn the following false scores into fractions or integers. (8 points)

( 1)80 16 =5 (2)5 1 19 =

(3)69 13 = (4)7920 =

4. Take out three of the following four digital cards and form three digits as required. (Only one in each group) (3 points)

(1) Odd number: _ 875 _ _ _ _; Even number: 508 _ _ _ _;

(2) It is also a multiple of 2, 5 and 3 _ 570 _ _ _ _.

Fifth, solve the problem. (***32 points)

1. Give the little monkey a swing! (2 points)

2. There are 27 boys in Class 5 (1), 5 more than girls. What percentage of boys are in this class? (6 points)

27-5=22 (person) 22+27=49 (person)

3. The packaging box of the microwave oven (as shown in the figure below) is 0.8m long, 0.5m wide and 0.5m high from the inside. How many cubic meters is its volume? (4 points)

0.8*0.5*0.5=

4. An engineering team wants to dig a rectangular pool with a length of 60m, a width of 40m and a depth of 150cm. How many cubic meters of sand did this engineering team dig out? (5 points)150cm =1.5m60 * 40 *1.5 = 3600m? =3600 cubic meters

5. How many square meters of glass do you need to make a cube glass sink (without cover) with a length of 0.4m? (5 points)

0.4*0.4*5= 1.8

6. cuboid fuel tank with a bottom area of 35dm? Height is 5dm. If 1 liter of gasoline weighs 0.73 kilograms, how many kilograms of gasoline can this oil drum hold? (5 points)

35*5= 175 (cubic decimeter) 175*0.73= 127.75

7. The sum of the side lengths of a cuboid and a cube is equal. Suppose the side length of a cube is 6cm, the length of a cuboid is 7cm, and the width is 6cm. What is the height of the cuboid? Are they equal in volume? (5 points)

6* 12=72cm

72/4 =18cm

18-7-6 = 5cm

7*6*5=2 10 cubic centimeter

6*6*6=2 16 cubic centimeter

2 10