The decimal unit of 1 is (), and the unit such as () is the smallest prime number.

2. () ⊙16 = () ⊙ () = (decimal)

3. Fill in the appropriate numbers in the brackets.

8cm=()m32ml=()cm？ () L = 3750ml ml

In order to help the Sichuan earthquake-stricken area to raise money, Xiaogang took a 3-minute cube box as a "love" donation box. The sum of all sides of the box is () decimeter, and the volume is () cubic decimeter.

5, the spring pool is full of spring water, and spring grass is born in spring. People drink spring wine in spring, and birds play spring breeze in spring. The word "spring" in this poem accounts for as much as () () of the total words in the whole poem.

6. Two-digit numbers are not only multiples of 5, but also multiples of 3 and even numbers. The minimum quantity is () and the maximum quantity is ().

7. Divide the 4-meter-long rope into 5 segments on average, each segment accounts for () of this rope, and each segment is () meters long.

8. In a shooting training, the shooting times of eight students are as follows: 4, 5, 4, 6, 10, 10, 7, 10. The average value of this set of data is (), the mode is (), and the median is ().

9.( 1) The pointer starts from "1" and rotates 60 clockwise around the O point, then points to ().

(2) The pointer rotates 90 counterclockwise around point O from "1" and then points to ().

Xiao Ming, Xiao Li and Xiao Kai read the same article. Xiao Ming spent an hour, Xiao Li spent an hour and Xiao Kai spent an hour and a half. () The fastest.

1 1, there are 9 bottles of water, 8 of which are of the same quality. In addition, 1 bottle is salt water (slightly heavier), which can be counted at least () times, which can guarantee to find this bottle of salt water.

Second, after careful consideration, I will choose. (10)

1, Dongdong drank a glass of milk of about 260 () in the morning.

A, cubic decimeter b, liter c, milliliter d, cubic meter

2. There are () odd numbers and composite numbers within10.

A, B, 65438+ C, 2D, 3

3. The left picture is obtained by () transformation.

A, translation b, rotation c, symmetry d, folding

4, numerator plus 5, to make the size of the fraction unchanged, the denominator should be ().

A, plus 5B, plus 6C, multiplied by 5D, unchanged.

5. The figure below () cannot be folded into a cube.

A, B, C, D,

Three, crisis, I'll judge. (10)

1, the factor of a number must be less than its multiple. …………………………………………()

2. Because =, and have the same decimal units. ………………………………()

If the score is false and true, then A must be 9. ……………………………()

4. Only 1 score is greater than or less than. …………………………………………()

5. When the side length of the cube is enlarged by 3 times, the surface area is enlarged by 9 times. ……………………………()

Fourth, examine the questions carefully, and I will do the math. (20 points)

1, a number written directly. (8 points)

+=-=+=-=

+= 1-=-=+=

2. How to calculate simply? (12)

( 1)+-(2) 1 -

(3)56-(—)(4)+++

Five, smart, I can draw. (6 points)

1, draw a triangle AOB around point O along 2, and draw the other half of the graph to make it a graph rotated 90 degrees clockwise. Axisymmetric graph.

B

A

O

Six, solve the problem, I can do it. (3 1)

1. In order to help the victims of the Sichuan earthquake, the factory urgently produced a number of relief tents. The first workshop completed 15 tents, and the second workshop completed 14 tents. How many tents are still unfinished?

2. Three classes in Grade Five welcome the Olympic Games to clean up the "white pollution". The situation of picking up plastic bags is as follows:

Category 5 (1) 5 (2) 5 (3)

Kilogram quantity

kilogram

kilogram

How many kilograms of plastic bags did the three classes pick up?

3. 1 class students line up to perform for five years, with continuous 12 or 16 students. It is understood that there are less than 50 students in this class. How many students are there in this class?

Uncle worker dug a swimming pool with a length of 8m, a width of 6m and a depth of 2m. How many m2 tiles do you need if you put tiles around and at the bottom of the swimming pool?

5. Put a cuboid water tank with a length of 10 decimeter, a width of 8 decimeters and a water depth of 4.5 decimeters into a stone, and the water level rises to 6 decimeters; What is the volume of this stone? .

6. Xiaohong has to be measured for her birthday every year. The picture below shows the comparison between her height measured between 7- 15 years old and the national standard height of girls of the same age.

(1) At what age did Xiaohong gain the most height?

(2) Talk about the change of Xiaohong's height to the standard height ratio.

(3) What information can you find from the picture?