Class name and student number

1. Fill in the blank: (65438+ 0 for each blank, ***24)

1, commonly used area units are (), () and (), and the propulsion rate between two adjacent area units is ().

2. A small square with a side length of 1 cm and an area of ().

The length of a rectangle is 5cm, the area is 20cm2, the width is () cm and the circumference is () cm.

4. Use 12 small squares to make a rectangle with a side length of 1 cm. The area of this rectangle is () square centimeters.

5, 2 square decimeter = () square centimeter 300 square decimeter = () square meter

25 square meters = () square decimeter 600 square centimeters = () square decimeter

6. Fill in the appropriate unit name in brackets.

A big tree is 12 ()

The area of a class desktop is about 30 ()

The school covers an area of about 5000 square meters.

The area of a test paper is about 12 ()

The area of the classroom door is about 2 ()

6. fill in ">", "

500 square centimeters, 60 square meters, 80 square decimeters and 8 square meters.

3 square meters ○200 square decimeter 100 square centimeter ○ 1 square decimeter

7. The side length of the small square below represents 1 cm. How many square centimeters is the area of each figure?

() Square centimeter () Square centimeter () Square centimeter new |

2. Judgment: (Mark "√" in the right picture and "×" in the wrong picture. ) (5 points)

1. Two rectangles with the same area may have unequal perimeters. ( )

2. The perimeter and area of a square with a side length of 4 cm are equal. ( )

If the side length of a square is increased by 2 cm, the area will be increased by 2 cm. ( )

4. A figure consisting of six squares with an area of 1 square decimeter, all of which have an area of 6 square decimeters. ( )

Compared with 5 square centimeters, 5 square centimeters is big. ( )

Iii. Multiple choice questions (10)

1, area unit and length unit comparison ().

A. the area unit is large B. the length unit is large C. it cannot be compared.

2. The area of four grade three students holding hands with open arms in turn is about ().

A. 1 cm2 B. 1 cm2 C. 1 m2

3. The circumference of a square is 4 meters and the area is ().

A. 1 m B. 1 m2 C.4 m2.

4. A square piece of paper with a side length of 14 decimeter can be cut into at most () pieces with a side length of 4.

One meter square.

A.9 B.3 C. 16

5. The perimeter of a rectangle consisting of five squares with an area of 1 cm2 is ().

A. 12 cm B.5 cm C.6 cm

Fourth, the calculation problem. (25 points)

1. Calculate the area below. (Unit: cm) (15min)

10 5

6 6 4

4 4 2

2. Calculate the area of the shaded part below. (Unit: cm) (5 points)

Please draw two different interesting figures on the paper below, so that their area is equal to 16 square centimeter. (The side length of each square is 1 cm) (10 minute)

6. Problem solving: (1 6 points for each question, 5 points for the rest of the small questions, ***26 points. )

1, rectangular grassland, width18m, length and width twice.

(1) What is the area of this grassland?

(2) If you walk around this meadow, how many meters do you walk?

2. How many square bricks with an area of 4 square decimeters should be laid on a sidewalk 80 meters long and 3 meters wide?

Xiao Ming cuts a square from the rectangular paper on the right. What is the rest of the diagram? How many square centimeters is its area?

4. A rectangular vegetable field, 8m wide and17m long. If 10 Chinese cabbage can be planted per square meter, how many Chinese cabbages can be planted in this vegetable field?

5. Li Shifu is going to paint a classroom wall with a length of12m and a height of 4m. There are two 4m windows on the wall. Please calculate how many square meters is the area to be drawn?