The final examination paper of mathematics in the sixth grade last semester contains the answer (Jiangsu Education Edition)
First, see the topic clearly and think skillfully. (***28 points)
1. Numbers written directly: (4 points)
37 × 3= 89 ÷ 4= 34 + 4 = (23 )? =
67 × 56 = 3 10 ÷ 56 = 137 ÷26 = 35 - 12 =
2. Solving equations: (8 points)
4X+ 12 = 40 2.5x÷3 = 6 X+35 X = 87 5X-4 1 1 = 7 1 1
3. Simplify the following proportion and find the proportion: (4 points)
3.6 :9 45 :23
4. Calculation of the following problems can be simplified. (12)
65 × 67 - 67 ÷5 4- 9 15 ÷95 - 23
23 - 56 ×3 10 + 32 74 ÷(23 + 12 )× 45
Second, think carefully and fill in the blanks carefully. (***27 points. )
1, Xiaoming is one year old, grandpa is six times older than Xiaoming and five years old, and grandpa is () this year. If grandpa is 7 1 year old this year, Xiaoming is () years old this year.
2. On the right is the expanded view of the main body of ().
Its bottom area is () square centimeters,
Its volume is () cubic centimeters.
3. Fill in the appropriate unit name in brackets:
The volume of a pencil box is about 180 (), and the volume of a pure water bottle is about 18 ().
4, 35 liters = () ml 78.3 cubic decimeter = () cubic meters
5. Fill in ">" < "=" in the box.
37 × 1 18 1 19 37 23 ÷4 173 23 3.5 35% 16 16.7%
6 、()÷8 = 12:()= 0.75 = 3()=()& lt； Fill in percentage >
7. The cuboid has a block length of 1 cm, a width of 2 cm, and a height of 3 cm (a>b>c). When it is cut into two identical cuboids, the surface area will increase by at least () square cm, and at most.
() square centimeters.
8. The picture on the right is a triangular ruler, and the degree ratio between ∠2 and ∠3 is (): ().
The ratio of ∠2 to ∠ 1 is (): ().
9. As shown in the picture on the right, a rectangle is evenly divided into eight squares, and the colored part in the picture accounts for ()% of the total area. If 37.5% of the total area is to be painted red, then () squares are painted red.
10、○+○+○+□+□= 55 ○=□+□+□ ,
○=( ),□=( )。
1 1, six faces of a cube are written with 1 1, 2 2, 3 3 respectively. Throw this cube up at will. After falling, the probability of the number "2" going up is () (), and the probability of the odd number going up is ()%.
/kloc-50 people from class 6 (3) of class 0/2 arrived at school today, and 2 people called in sick. The absence rate of Class Six (3) today is ()%, and the attendance rate is ()%.
Third, choose carefully and choose the best among the best. (***5 points)
1, in the figure below, can be folded into a cube is ().
B.C.
There are 26 boys and 24 girls in Lily's class. Now we have to choose 1 girl and 2 boys to take part in the popular science knowledge contest. The possibility that Lily is selected to take part in the competition is ().
a、 124 B、350 C、 150
3. A box of cuboid boxed yogurt marked with "net content of 650ml", the outer package is measured to be 8cm long, 5cm wide and 15cm high. According to the above data, you think the label of "net content" is ().
A, true b, false c, uncertain
4. Prepare a gift candy, and the mass ratio of toffee to chocolate is 5: 3. This gift candy should be prepared now. Toffee and chocolate each have 60 kilograms, so when all the toffee is used up, chocolate will ().
A, there is still B, not enough C, it is impossible to judge.
5. "Chickens and rabbits in the same cage" is one of the famous mathematical problems in ancient China. The title recorded in Sun Tzu's Art of War is this: "Today, there are chickens and rabbits in the same cage, with 35 heads above and 94 feet below. What are the geometric figures of chickens and rabbits? " ,
Students, the result of this ancient famous question you got is ().
A, chicken 23 rabbit 12 B, chicken 12 rabbit 23 C, chicken 14 rabbit 2 1.
Fourth, carefully scrutinize and judge right and wrong. (***5 points)
1. An apple weighs 320kg, which means it weighs 15% kg. ( )
2. Two adjacent faces of a cuboid are squares, and this cuboid must be a cube. ( )
3, A÷ =B× =C+(ABC is not 0), then a.
4. The two ribbons are one meter long, the first one is used to remove rice, and the second one is used. The second one will take a long time. ( )
5.A is not 0, so A and 1a are reciprocal. ( )
Fifth, use both hands and brains to operate thinking. (65438+ 0 points for each question, ***5 points)
1. Draw a rectangle in the figure below (the side length of each cell is 1cm), so that the perimeter of the rectangle is 12 cm and the aspect ratio is 2: 1. (Count first, then draw. 3 points)
2. A shopping mall uses a turntable for lottery activities. The winning rate of the first prize is 18.
The winning rate of the second prize is 50%. Please color the first prize area on the right side of the turntable green and the second prize area blue. (2 points)
Sixth, apply knowledge to solve problems. (5 points for each question)
1. Teacher Zhang bought eight basketballs and 1 football for the school, which cost 520 yuan. The unit price of football is known as 80 yuan. What is the unit price of basketball? (column equation solution)
2. The following is the statistical table of Ma Mingjia's household expenditure in February. (Complete the statistical table)
(1) The leisure expenses of his family in June 5438+February are more than the water and electricity expenses 15. What was his leisure expenditure in June+February, 5438?
(2) What is the percentage of his family's food expenses in June 5438+February?
Students donate money to the people in Sichuan disaster area. Class 6 1 * * donated 2400 yuan, class 62 donated 56% and class 63 donated 45%. How much did Class 63 * * donate?
The length-width ratio of our national flag is 3: 2. If the width of the national flag is 80 cm, how long is it?
There are 27 sets of chess and checkers in the school, just for 98 students to carry out activities at the same time. Every two people play chess and every six people play checkers. How many chess and checkers are there in the school?
6. There is a completely closed cuboid container, the inside is 20 cm long, the width is 16 cm, and the height is 10 cm. When laid flat, the water level is 7 cm (left). If this container is placed upright (right), how many centimeters is the water?
Reference answer
First, see the topic clearly and think skillfully.
1、97 ,29 ,434 ,827 ,57 ,925 , 1 14 、 1 10 。
2、x=7，x=7.2，x=57，x= 15。
3. The simplest ratio is 2: 5 and the ratio is 25; The simplest ratio is 6: 5 and the ratio is 65.
4.518,76, 16 (simple calculation problem), 47,11(simple calculation problem).
Second, think carefully and fill in the blanks carefully.
1、6a+5、 1 1 .
2、 40, 80 。
3, cubic centimeters, liters.
4、600 , 0.0783 。
5 、& lt，& gt，& gt，& lt。
6、6, 16,4,75% 。
7 BC, 2 BC.
8、2: 1, 2:3 。
9、25 ,3 。
10、 15 ,5 。
1 1、 13 , 66.7
Third, choose carefully and choose the best among the best.
C, A, B, A, A.
Fourth, carefully scrutinize and judge right and wrong.
×,√,√,×,√
Fifth, use both hands and brains to operate thinking.
(1), the length of the rectangle is 4cm and the width is 2cm. (Figure omitted)
(2) (omitted)
Sixth, apply knowledge to solve problems.
1, solution: Let the unit price of basketball be X yuan.
8X+80=520 X=55
2.( 1)300 yuan; (2)37.5%
32,500 yuan.
4.120cm.
5. Chess 16 pairs, checkers 1 1 pairs.
6, 14 cm.