The final examination paper of the fifth grade mathematics next semester (with answers) 1. Carefully examine the questions and fill in the blanks (22 points, 1 ~ 14 0.5 points, 15 questions 1 point).
1 and 0.36 have () percentages, and the number of chemical components is ().
2. The red balloon (Le Ballon Rouge) is the total number of balloons, which means that () is regarded as the unit "1", which is divided into () on average, and red balloons account for ().
The decimal unit of 3 is (), and the sum of these decimal units () is equal to the smallest prime number.
4. In the project, sand, soil, etc. 1m3. It is called ().
5.= = = 12÷( )= () (fill in decimal places)
6. The greatest common factor of12 and 15 is (), and the smallest common multiple is ().
7. A bag of biscuits is 2 kilograms. If you eat this bag of biscuits, there is still () left in this bag of biscuits. If you eat kilograms, there are () kilograms left.
Of the five numbers in 8.0.625, the largest number is (), the smallest number is (), and () and () are equal.
9 and 3 are () scores, pronounced as ().
10, saw the 3-meter-long batten into 5 segments on average, each segment is () meters long, and each segment accounts for () of the total length.
1 1, a set of data 12, 14, 12, 16, 14, the median of this set of data is (), and the mode is ().
12, the sum of two prime numbers is 20, and the product is 9 1. These two prime numbers are () and () respectively.
13, and the unit of the score is yes. The highest true score is (), the lowest false score is (), and the lowest band score is ().
14, fill in the corresponding company name.
Xiao Ming's living room covers an area of about 50 (), and the school flagpole is about 15 ().
The volume of an eraser is about 8 (), and the volume of an automobile fuel tank is about 24 ().
15. The rectangular wooden box is 6dm in length, 5dm in width and 3dm in height. The sum of its sides is () dm, with an area of () dm2, a surface area of () dm2 and a volume of () dm3.
Two, careful scrutiny, careful diagnosis, the correct mark "tick", the wrong mark "x" (each item 1 minute, * * *1minute).
1, reduction and general fractions are based on the basic properties of fractions. ( )
2. A cube with a side length of 6 cm has the same surface area and volume. ( )
3. The greater the denominator of a score, the greater the unit of the score. ( )
4. In a set of data, there may be multiple patterns or no patterns. ( )
5. The score greater than or less than does not exist. ( )
6. The volume of an object is equal to its volume. ( )
7. The volume of cuboids and cubes can be calculated by multiplying the bottom area by the height. ( )
8. Parallelogram is an axisymmetric figure. ( )
9. Divide a rope into four sections, and each section occupies the rope. ( )
10. After cutting a cube into two identical cuboids, the volume and surface area remain unchanged. ( )
Third, compare repeatedly, choose carefully, and fill in the correct answer in brackets (each small question 1 point, *** 14 point)
1, and compare ()
A, the unit of the score is the same; B, meaning the same; C, the same size.
2. The shaded part on the right is expressed as a score ()
A, B, C,
There are 65,438+00 glass beads, one of which is slightly lighter. Weigh it at least () times to ensure it is found.
a、2 B、3 C、4
Xiao Gang and Xiao Ming did the same homework. Xiao Gang spent hours, Xiao Ming spent hours, and the fastest one was ().
A, Xiao Gang B, Xiao Ming C, equally fast.
5, cut a rope into two sections, the first section is meters long, the second section accounts for the whole length, and the two sections of rope are compared ()
A, the first section b and the second section c have the same length.
6. Pour 60 liters of water into a 5-centimeter-long cubic container. The height of water is () decimeter.
a、2 B、2.4 C、 12
7. Put10g of sugar into 90g of water, and sugar accounts for () of sugar water.
A, B, C,
8. Of the three scores, the smallest is ().
A, B, C,
9, rotation and translation just changed the graphics ()
A, shape b, size c, position
10, the side length of the cube is expanded to three times and the volume is expanded to () times.
a、9 B、 18 C、27
1 1, a rope is folded in half for three times in a row, with the total length of each section ()
A, B, C,
12, in order to clearly reflect the monthly average temperature changes in Suining and Chengdu in 20 13 years, () statistical chart should be selected.
A, single fold line b, composite fold line c and composite strip
13, the following score () is the simplest score.
A, B, C,
14, a number, is both a factor of 12 and a multiple of 12. This number is ().
a、6 B、 12 C、 144
Fourth, see the requirements clearly and be careful. (30 points)
1, and fill in the appropriate figures in brackets (6 points, each item 1 minute).
0. 15= ≈ () (two decimal places are reserved) 6=
( )- =
2. Oral calculation (6 points, 65438+ 0 points for each small question)
10÷2.5= 2.4×0.5= -0.25=
1- 2-
3, off-type calculation, can simplify the complex (9 points, 3 points for each small question)
4. Solve the equation (9 points, 3 points for each small question)
Five, see the requirements, carefully draw (4 points, 2 points for each small question)
1. Draw a symmetrical figure of triangle OAB with the given dotted line as the symmetry axis.
2. Draw a graph of triangle OAB rotating 90 degrees clockwise around point O. ..
Six, the use of knowledge to solve problems (20 points, 4 points for each small question)
1. Dad bought a watermelon weighing 20 kilograms. My daughter ate this watermelon and my mother ate this watermelon. How much is left?
2. The furniture factory ordered 500 squares, each with a cross-sectional area of 24dm2 and a length of 3 m. How many squares are there?
A cuboid glass jar is 8cm long, 6cm wide, 4cm high and 2.8cm deep. How many liters of water will overflow from the jar if you put a 4dm long cubic iron block?
4, a story book *** 100 page, Xiaohong read the whole book on the first day, 20 pages the next day, and several pages in two days.
Xiaohong and her mother are 465,438+0 years old this year. Three years ago, her mother was 25 years older than Xiaohong. How old are her mother and Xiaohong this year?
Reference Answers and Grading Criteria for Grade Five Mathematics
1. Carefully examine the questions and fill in the blanks (22 points, 1 to 14 0.5 points for each question, 15 for each question 1 point).
1, 36 2, the total number of balloons 7 5
3, 13 4, 1
5、 12 27 15 0.75 6、 3 60
7 or 1 8 or 0.625
9, use 3 1 10,
1 1, 13,12,7 and 13.
13、 1
14, square meters or square meters or cubic meters or cubic centimeters liters or liters
15、56 30 126 90
Second, careful scrutiny and careful diagnosis (each small question 1 point, * * *1point)
1、√ 2、× 3、× 4、√ 5、×
6、× 7、√ 8、× 9、× 10、×
Third, compare repeatedly and choose carefully (each small question 1 point, *** 14 point)
1、C 2、C 3、B 4、A 5、B 6、B 7、B
8、A 9、C 10、C 1 1、C 12、B 13、A 14、B
Four, see the requirements, careful calculation (***30 points)
1, fill in the number (each small question1): 0.361851.
2. Oral calculation (each small question 1):4 1.2 0 1 or
3. Out-of-formula calculation (3 points for each small question): The calculation is not simplified, and only 1 point is obtained if the result is correct.
= (2 points) = =
= ( 1) = 1- (2) = 1+ (2)
= simple calculation (1) = 1 simple calculation (1)
4. Solve the equation (3 points for each small question):
Solution: (2 points) Solution: (2 points) Solution: (2 points)
( 1) ( 1) ( 1)
No points will be deducted if you don't write "solution".
Five, see the requirements, carefully draw (4 points, 2 points for each small question)
Six, the use of knowledge to solve problems (20 points, 4 points for each small question)
General requirements: 1, the unit and answer of each question will not be scored, and only 0.5 point will be deducted for one or more errors in the unit and answer: 2, 80% of the scores are correct (including the calculation errors in the first step and the correct ideas in the second step); 3. Wrong deduction from the comprehensive formula result 1. 4. Step-by-step calculation, with 0.5 points for each step.
1、 1-( )=
2.0.24× 3× 500 = 360m2 = 360m3。
3, 4×4×4-8×6(4-2.8)=6.4dm3=6.4 liters.
4、①20÷ 100= ②
5. Mom: (4 1+25)÷2=33 (years old)
Xiaohong: 4 1-33=8 (years old)