First, fill it out.

1, 120 hectares = () square kilometers 5.64 hectares = () square meters.

456,000 square meters = () hectares 1.2 square meters = () square centimeters.

8 square meters = () square decimeter = () square centimeter

2. The base of a triangle is 3.6 decimeters, the height is 4.8 decimeters, the area of the parallelogram with the same height as the base is () square decimeters, and the area of this triangle is ().

3. The trapezoid has an upper bottom of 18cm, a lower bottom of 22cm, a height of 15cm and an area of () cm2.

4. The base of parallelogram is 12cm, the area is 96cm2, and the height is () cm.

5. Two identical triangles form a parallelogram with a base length of 8.5 cm and a height of 6 cm. The base of this triangle is () and the height is ().

6. Draw the parallelogram into a rectangular frame with a perimeter of () and an area of ().

7. The area of a trapezoid is 16 square decimeter, the upper bottom is 3 decimeters, the lower bottom is 5 decimeters, and the height is () decimeters.

8. The base of the parallelogram is expanded to twice the original, and the area is () times under the condition of constant height.

9. The base of a triangle is 5cm, and its height is twice that of the base, so its area is ().

10, the area of an isosceles right triangle is 32 square centimeters, and the length of its right side is () centimeters.

Second, distinguish one.

1, two identical trapezoids can be combined into a parallelogram. ( )

2. Two triangles have the same area and the same shape. ( )

3. The area of triangle is equal to half the area of parallelogram. ( )

4. The length and width of the rectangle increased by 3cm and 5cm respectively, and the area increased by 15cm. ( )

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

6. The larger the base of the parallelogram, the larger the area. ( )

7. The perimeters and areas of two regular triangles are equal. ( )

8. Two right-angled triangles with three sides of 3 cm, 4 cm and 5 cm respectively. The perimeter of the parallelogram formed by these two figures must be 16 cm. ( )

9. The upper bottom of the trapezoid is expanded to twice the original size, while the lower bottom and height remain unchanged, and its area will be expanded to four times the original size. ( )

10, two triangles with equal areas, their bases and heights are not necessarily equal. ( )

Third, choose a choice.

1. The upper and lower bottoms of the trapezoid are expanded to three times of the original, and the height and area remain unchanged ().

A. expand to six times the original

C. Expand to 9 times of the original, unchanged

2. The height of the parallelogram is ()

A. 1 clause b.2c. numerous clauses d.4.

3. The height of the trapezoid is 4 cm, and the area is increased by increasing the upper and lower bottoms by 6 cm respectively ()

A.6 cm2 B. 12 cm2 C.24 cm2

4. Triangle and parallelogram have the same area and height. Given that the base of a triangle is 20 cm, the base of a parallelogram is ().

A.20 B. 10/0cm C.40cm.

5. What is the relationship between the areas of the two parallelograms in the picture below ()

a . s 1 > s2bs 1 < s2c . s 1 = s2d。 Can't compare.

6. The correct formula for calculating the following graphic area is: ()

a . 10×20 b . 14×20 c . 14× 10

7. The shaded area in the figure below is correct: ()

A.A = D < B < C B. A = B = C = D. D > A = B = C。

8. The two trapeziums of () can be combined into a parallelogram.

A. Same shape B. Equal area C. Arbitrary D. Exactly the same

Fourth, calculate:

1. Calculate the area of each graph below. (Unit: cm)

2. A triangular paddy field is 0.06 hectares with a base length of 40 meters. What is the height of the rice field?

3. The windshield of a car is similar to a parallelogram, with a bottom of 1.6m and a height of 0.8m If 240 yuan is needed for each square meter of tempered glass, how much does it cost to match this windshield?

4. A trapezoidal wheat field with an upper bottom of 76m, a lower bottom of120m and a height of 50m. A * * * harvests 93 10 kg of wheat. How many kg of wheat is harvested per square meter on average?

5. It is known that the circumference of an isosceles triangle is16cm, the waist is 5cm, and the height on the bottom is 4cm. What is the area of this triangle?

6. The school bought a red cloth with a width of 2.4 meters and a height of 384 meters. How many faces can you make to make a red pennant with a base height of 0.8 meters?

The fifth grade first volume mathematics final examination paper

Fill in the blanks.

The greatest common factor of 1, 16, 12 is (), and the smallest common multiple is ().

2. In the natural number 1- 10, the prime number has () and the composite number has ().

3. The minimum three digits of factor 2 and factor 3 are (), and the maximum two digits of factor 3 and factor 5 are ().

4, a kind of light, pull the light on once, and then pull the light off, if pulled 20 times, the light is ().

5. In 40, 5 and 8, () is a factor of (), and () is a multiple of ().

6. The area of a triangle is 36 square meters. If its base is unchanged and its height is doubled, then its area is ().

7. Divide a 5-meter-long rope into 8 segments on average, each segment accounts for () of this rope, and 2 segments are () meters.

8. The sum of three consecutive even numbers is 54, which are (), () and () respectively.

9, a pile of wood, the top layer is 10, each layer below is more than the previous layer 1, * * * has five layers, and this pile of wood * * * has () roots.

10, a number is a multiple of 5, and the sum of the digits on each number is 6. Such two digits are () and ().

Second, the correct judgment is "∨" and the wrong one is "×".

1, the multiple of a number is always greater than its factor. ( )

2. Two parallelograms with equal area, equal base and equal height. ( )

3. The product of two different prime numbers must be a composite number. ( )

4. If the numerator and denominator of a fraction are expanded by four times at the same time, the fraction will be expanded by four times.

In a math exam, the probability that Xiao Ming gets full marks is 1.

Third, choose and write the correct serial number in brackets.

1. If 4()6 is a multiple of 3, () should be filled in.

a、 1、2、3 B、2、4、6 C、2、5、8

2. The bottom of the triangle remains unchanged. If the height is expanded by 4 times, then its area ().

A, expand by 4 times B, expand by 2 times C, which is uncertain.

3. Cut a parallelogram along the height, and you may get ().

A, triangle and trapezoid b, parallelogram and trapezoid

C, two triangles D, two trapeziums

4. Divide the 2m-long rope into 5 sections, each section is ().

a，m，b，c，m

5. Among the following scores, the one that is not the simplest is (

Step 3: Solutions

A, B, C,

Fourth, solve the equation (18 points) x-=+x = 12x-9x = 8.7.

3x — x = 0.9 x — =

2x + 1 = 5 3x+ x =4、8 x — =

It is 2cm, and the length of this line segment is ().

a，4cm B，2cm C，6cm 5。 Solve the problem. (30 points)

1. There is a path with a length of 8m and a width of 1 m on the grass of the parallelogram. Find out the area of the grass.

2. Divide 20 chocolates among 3 people equally. How much will everyone get? What about eight people on average?

3. Two engineering teams, Team A and Team B, built a road with a length of 1 1,400 meters. They started construction at both ends at the same time. Team A builds 80 meters every day, while Team B builds 60 meters every day. How many days will it take to complete this road?

The distance from Huainan to Wuhu is 240 kilometers. At 6: 30 every morning, the bus from Huainan leaves for Wuhu at a speed of 58 kilometers per hour, and the bus from Wuhu leaves for Huainan at a speed of 62 kilometers per hour. When did the two cars meet on the road?

There are () factors of 10 and 30.

A, 4 B, 8 C and 2 125. In the forest sports meeting, the deer and the lamb ran the same distance, and the deer scored and the lamb scored. Who runs faster?

,/。 . five

Fifth, solve the problem. (30 points) 6. A story book, Xiaohong read the whole book on the first day, the whole book on the second day, the sum of the whole book on the third day, and several books on the third day.

1. There is a path with a length of 8m and a width of 1 m on the grass of the parallelogram. Find out the area of the grass.

2. Divide 20 chocolates among 3 people equally. How much will everyone get? What about eight people on average?

3. Two engineering teams, Team A and Team B, built a road with a length of 1 1,400 meters. They started construction at both ends at the same time. Team A builds 80 meters every day, while Team B builds 60 meters every day. How many days will it take to complete this road?

The distance from Huainan to Wuhu is 240 kilometers. At 6: 30 every morning, the bus from Huainan leaves for Wuhu at a speed of 58 kilometers per hour, and the bus from Wuhu leaves for Huainan at a speed of 62 kilometers per hour. When did the two cars meet on the road?

rice

In the forest sports meeting, the deer and the lamb ran the same distance, and the deer scored and the lamb scored. Who runs faster?

6. A story book. Xiaohong finished reading the whole book on the first day, the next day and the third day, which was less than the sum of the previous two days. How many books did she read on the third day?