I. Fill in the blanks (15)
1. If Li Hua walks 20 meters east and is marked as +20 meters, then Li Hua walks 43 meters west and is marked as () meters. If Li Hua walks 50 meters north and is marked as +50 meters, then Li Hua walks -30 meters, indicating that he ().
2. The boiling point of water is ()℃ and the freezing point of water is ()℃.
3. One night, the temperature dropped by 8 degrees from 6 degrees above zero in the morning, and the temperature at night was ().
4. On the number axis, -4 is closer to () (fill in 0 or 3), and the two numbers adjacent to-1 are () and ().
The triangle has an area of 20 square centimeters, a height of 8 centimeters and a base of () centimeters.
6. The area formula of parallelogram can be expressed by letters as (), where () represents the height.
7. Triangles and parallelograms have the same area and the same base. If the height of a triangle is 26 cm, then the height of a parallelogram is ().
8, a right triangle, three sides are 6 cm, 8 cm, 10 cm, its area is () square cm.
9. The bottom of the trapezoid is 6 decimeters, the upper bottom is 9 decimeters and the height is 2 decimeters. Its area is () square decimeter.
10, the area of a trapezoid is 20 square meters. If its upper bottom, lower bottom and height are doubled, its area is () square meters.
Second, true or false (10)
1. Two triangles with the same area can form a parallelogram. ( )
2. Two parallelograms with different shapes have different areas. ( )
3. The parallelogram with the same base and height has the same area. ( )
4. The area of triangle in parallelogram is half that of parallelogram. ( )
5. A number can be positive or negative. ( )
Three. Select (*** 10 point)
1. Cut off a triangle in the parallelogram and compare the remaining area with the cut area, ().
A, the remaining area is large b, the cutting area is large c, and the same size is d, which cannot be compared.
2. It is known that the triangle has an area of 80m2 and a height of 8m, and the formula for finding the bottom is ().
a、80÷ 8 B、80×2 \u 8 C、80×8 \u 2D、80 \u 2 \u 8
3, the person's body temperature is about ().
a、0℃ B、 18℃ C 、-2℃ D、37℃
4, to 5 meters long and 4 meters wide rectangular floor tile, need a square floor tile with a side length of 5 meters ().
a、80 B、4 C、200 D、400
5, A, B two cold storage, A cold storage temperature-18℃, B cold storage temperature -20℃, the lower temperature is ().
A, A B, B C, uncertain
Four, calculation (***23 points)
1, unit conversion (8 points)
8 meters = () decimeter 8 square meters = () square decimeter
400 cm = () decimeter 400 cm 2 = () decimeter 2.
3 square kilometers = () square meters = () hectares
4500 hectares = () square meters = () square kilometers
2, column vertical calculation (6 points)
180×80= 406× 13= 540÷40=
3. Simple calculation. (9 points)
25×32× 125 72×22-22×22 900÷ 15÷6
Fifth, the operation problem. (*** 12)
1 class, Grade 5 (1) and (2) There is a Go game with 8 people in each class. Which class scored more points and won? The results of the games that have been played are recorded as follows.
Scoring rules: win a game and score1; If you lose a game, score-1.
Game 1, game 2, game 3, game 4.
5 1 class1-11
52- 1 level 1- 1- 1 level
(1) Now Class Four (1) has won _ _ _ _ _ _ and lost _ _ _ _ _.
(2) Now Class Four (2) has won _ _ _ _ _ _ and lost _ _ _ _ _.
(3) Class 4 (1) If you want to win Class 4 (2), you need to win _ _ _ _ _ _ _.
(4) Class 4 (2) needs to win _ _ _ _ _ _ if it wants to win Class 4 (1).
2. Draw a parallelogram with an area of 8cm2, a triangle with 6cm2 and a trapezoid with 12cm2. (bottom paper per grid 1 cm2)(6 points)
Five, the application problem (***30 points)
1, Farmer Orchard is a parallelogram garden with 360 fruit trees planted in it. If each fruit tree covers an average area of 4 square meters, the base of the parallelogram is 90 meters, and the height of the parallelogram is how many meters?
2. The dam section of a hydropower station is trapezoidal, with an upper bottom of 24 meters, a lower bottom twice as high as the upper bottom and a height of 20 meters. What is the area of this cross section?
3. Xiao Gang scored 86 points in Chinese, 94 points in mathematics, 90 points in English, 95 points in science and 85 points in society.
(1) Can you work out the average score of five courses?
(2) Take the average score as the standard. Those with more than the average score are marked as "+"and those with more than the average score are marked as "-".Use positive and negative figures to indicate the scores of all subjects and fill them in the table.
Subjects are equally divided into Chinese, mathematics, English, science and ethics, and society.
Results (points)
4. The farm should set aside a triangle of 1000 square meters to grow soybeans. The known cardinal number is 50 meters. What should the height be?
5. The shape of the pier is shown on the right. The cross section of the upper part is trapezoidal, and the cross section of the lower part is rectangular. What is the cross-sectional area of this pier?
People's education printing plate fifth grade mathematics unit 1 examination questions (2)
First, think carefully and fill in carefully. 22 points
1, expanding 0.59 to its 10 times is (), and reducing 5.9 to it is ().
2. Fill in the appropriate figures according to 32× 18=576.
3.2× 18=( ) 0.32×0. 18=( )
( )× 18=0.576 ( )×( )=5.76
3.8.279 Keep one place after the decimal point, which is about (), and the accuracy is about ().
4. Fill in "","or" = "in the box below.
3.5×0.99○3.5 7. 1×0.54○7. 1×5.4 4.25× 1. 1○4.25
0.83×3.02○3.02
5、6.9×4.5+3. 1×4.5=(____+____)×4.5
0.25×7.8×4=7.8×(___×____)
6. The product of two numbers is 6.4. If one factor is expanded to 10 and the other factor is expanded to 100, the product becomes ().
7,65.4 is 3.2 times that of (), and 1.6 is ()
Half of 8.6 is (), and three tenths of 72 is ().
8. Two-digit numbers. Rounding to the tenth place is about 3.6. This number is (), and the minimum value is ().
Second, compare repeatedly and choose carefully. 10 point
The simple algorithm of 1 and 16×9.8 is ().
a . 16× 10- 16×2 b . 16×( 10-2)c . 16×( 10-0.2)
2. When a number is expanded to its 100 times, it is 50, and this number is ().
0.5 to 0.05
3. The result of () is greater than the first factor.
A.5.4×0.9 B. 0.32×2 C.0.65×0
4, 8.5 hours is 8 hours () minutes.
a5 b . 50 c . 30
5. If □×χ = 5.4, (□× 2 )× (2) = ().
2 1.6 C. 10.8
Third, judge the question. 6 points
() 1, the product of two decimals must be a decimal.
() 2.65438+ 0.2 times the number greater than 0 must be greater than this number.
The product of () 3, 8.6×0.7, with one decimal place reserved, is about 6.0.
() 4. The product of 1.25× 0.97 is greater than 0.97 and less than1.25.
( )5、8.4- 1.4×0.2=7×0.2= 1.4。
( )6、 17.4×9+ 17.4= 17.4× 10= 174
Fourth, careful calculation and careful investigation. 34 points
1, a number written directly. 6 points
0.8×0.5= 0.9×5= 8×0.06= 0.05× 1.6=
0.75+0.4= 4.3+5.7= 0.27-0.2= 1.2-0.9=
100×0.7= 2.5×8= 1.06×7= 0.0 1×7.2=
2. Calculate the following questions in a simple way. 18 point
2.3×2.5×0.4 0.29× 102 1.2×2.5+0.8×2.5
1.25×0.4×8×2.5 0. 125×72 0.25×39+0.25
3, column vertical calculation. 10 point
☆0.43×27= 8.3×0. 15≈
(Keep two decimal places)
30.9×2.4= 1.85×2.6=
Fifth, apply knowledge to solve problems. 28 points
1, boys generally have 0.077 kg of blood per kg of weight, and Xiaoming weighs 34 kg. How many kilograms of blood does he contain in his body? (Figures shall be kept to two decimal places)
2. The height of sika deer is 1.46m, and the height of giraffe is 3.5 times that of sika deer.
(1) How tall is this giraffe?
(2) How many meters is sika deer shorter than giraffe?
3. The average speed of the train is about 70km/h, which is about 9.5km more than that of the car. It takes 6.4 hours for a car to travel from A to B. How many kilometers is there between A and B?
In April and September, how many kilowatt-hours can users in this building save?
(After switching to energy-saving lamps, each household can save electricity 1.28 degrees per day. There are 30 families in this building. )
5、
Articles gloves scarves hats
Unit price 5.8 yuan/Double 10.2 yuan/Set of 8.4 yuan/Top.
(1) How much does it cost mom to buy 5 gloves and 2 scarves? ;
(2) Dad brought 26 yuan money and wanted to buy one of these three things. Is there enough money?
6. Parking in the parking lot 1 time must be paid to 6 yuan at least. Parking for more than 3 hours, every 1 hour parking will be overpaid to 2.5 yuan. A car has been parked for 6.5 hours. How much should I pay when I leave? (Less than 1 hour is calculated as 1 hour)
Expanding and upgrading questions: (plus 10)
The school organized teachers and students to watch movies, with 950 students and 27 teachers. 8 yuan, an adult, and 4 yuan, a student. More than 30 people can buy group tickets, group tickets to 6 yuan. Please design the most economical ticket purchase scheme. How much will it cost at least? (There must be a calculation process)
People's education printing plate fifth grade mathematics unit 1 examination questions (3)
fill (up) a vacancy
1 and 6 greater than 0 are recorded as +6 and read as (); Numbers less than 0 times 4 are recorded as () and ().
2, minus 6 degrees Celsius means (),-1 1℃ means ().
3, Maldives is an island country, the average height is only higher than sea level 1 m, and its altitude is recorded as (); The altitude of the Dead Sea is -400 meters, which means ().
4.3.45 is the decimal place of (). In this number, 3 is at () position, indicating (), 4 is at () position, indicating (), and 5 is at () position, indicating ().
5. The number consisting of five tens and five thousandths is (), and its counting unit is ().
6.0.8 contains () 0.01; Rewrite 3 into a number with the counting unit of 0.0 1, which is ().
7, 23860006000 is pronounced as (), and the mantissa after omitting 100 million is about () million.
4994800= () ten thousand ≈ () ten thousand (accurate to one place)
8.3893000000 The number rewritten as "100 million" is () billion, and the divisor with a decimal place is () billion.
9, 4 □ 6666000 ≈ 400 million, □ 1 * * * can fill in the number ().
10, among all decimals consisting of 0, 0, 5, 7 and decimal point, the number of is (), and the smallest is ().
1 1, 10 square meter = () square decimeter 3600 square centimeters = () square decimeter.
4.8 points = () yuan 5 kg = () tons 14 mm = () meters 0.3 yuan = () angle.
12, there are () decimal places greater than 3 and less than 4. Write two: () ().
Choose the correct serial number and fill it in the brackets. 10%
1, the base of two triangles are equal and the height is equal, indicating that these two triangles ().
A has the same shape, B has the same area, C can be a parallelogram, and D is exactly the same.
2. The number below 0 is ()
A 0.004 B 0 C - 1 D+ 10
3. The correct formula for finding the triangle area in the figure below is ().
a6×8÷2 b8× 10÷2 C 6× 10÷2D、6×8
4, the following figures, accurate to about 6.00 percentile is ().
A 5.994 B 6.0054 C 5.995 D 6.005
5. 9.946 Keep one digit after the decimal point as ().
a、9.9 B、 10.0 C、9.9 D、 10.0
6. Pull a parallelogram movable frame into a rectangle, so the perimeter () and area () of the current rectangle are compared with the original parallelogram.
A, bigger B, smaller C, constant D, incomparable.
7. The base of a triangle is unchanged, the height is expanded by 6 times, and the area is ().
A, constant b expands 6 times C, expands 3 times D and contracts 3 times.
8. The base of a parallelogram is 40 cm, the height is 20 cm, and the area of a triangle with equal base and equal height is ().
A, 4 square decimeters b, 400 square decimeters c, 8 square decimeters
Third, the oral calculation questions. 12%
0.7×5= 0.08× 1000= 0. 1×6.7= 1.6×0.5=
2.5×4= 0.74×0.4= 7.5×3= 3.74×0=
0.8×0.6= 0.05×0.08= 80× 1.25= 0. 13×7=
Four, simple calculation problem (every small 4% *** 16%)
1.2.4× 12.5=
2.9.43× 10 1=
3.3.4× 12.5+6.6× 12.5=
4.0. 125×9.3×0.8=
People's education printing plate fifth grade mathematics unit 1 examination questions (4)
1. Fill it in.
The product of (1)35×0.73 has () decimal places.
(2) 8 times of 0.25 is (), and the formula is ().
(3)6.5×2.4+6.5×7.6= ( )
(4) 12.5×3.4×0.8=( × )×
(5)9.954 The reserved two decimal places are (), the reserved one decimal place is (), and the reserved integer is ().
(6)2. 15 hours = () hours () minutes
2. Choose one.
The product of (1)0.36×0.25 is ().
A.0.009 B
(2) The product of1.24× 0.24 is accurate to about ().
A.0.27 B. 0.30
C.0.3 D. 0.3 1
(3) Calculate 2.5×4.4, and the correct one is ().
A.2.5×4.4=2.5×4+ 1. 1
B.2.5×4.4=2.5×4×0.4
C.2.5×4.4=2.5×(4+0.4)
(4) The product of the following categories is less than 0.68 ().
A.0.68× 1.0 1
B.0.68×0.99
C.0.68× 1
3. Do simple calculations in the way you like.
9.9×9+9.9
12.5×32×2.5
0.8×0.6× 1.25
3. 14×7.2+3. 14×3.8-3. 14
Please ask a math question before you answer.
Key and difficult points, catch them all.
A classroom is 6.5 meters wide and 2.5 times long. What is the area of this classroom? (Numbers are reserved as integers. )
The school bought five basketballs and eight volleyballs. Basketball is 42.6 yuan and volleyball is 28.8 yuan. How much does the school have to pay?
7. A car travels from A to B at a speed of 64 kilometers per hour and arrives at B in 4.5 hours. If the speed is 75 kilometers per hour, can it be reached in 3.8 hours?
8. The product of two factors is 24.4, in which one factor is enlarged by 6 times and the other factor is reduced by 2 times. What is the product?
By analogy, we can apply innovation to show our talents!
9. Calculate the following questions in a simple way.
1 1×22+0.22×3300+660×2.2
10. A decimal is multiplied by itself, and the product and difference add up to 0.36. What is this decimal?
People's education printing plate fifth grade mathematics unit 1 examination questions (5)
1.( 1) beam (2)2 0.25×8 (3)6.5×(2.4+7.6)
(4)( 12.5×0.8)×3.4 (5)9.95 10.0 10 (6)2 9
2.( 1)B (2)B (3)C (4)B
3.99 1000 0.6 3 1.4
leave out
5.6.5×2.5×6.5≈ 106 (m2)
6.443 4 yuan 7. number
8.73.2
9. The original formula =11× 22+22× 33+66× 22.
=( 1 1+33+66)×22
= 1 10×22
=2420
10.0.6